import os
import sys
import time
import modal
import torch
import pathlib
import funcy
import json
import pandas as pd
import numpy as np
import tempfile
import torchaudio
import random
import pyloudnorm as pyln

from suno_utils.audio import Audio
from suno_utils.gpt.generation import GenerationConfig
from suno_utils.gpt.engine import Engine
from suno_utils.gpt.generation_engine import make_request
from suno_utils.worker.settings import s3_client

# from suno_utils.worker.modal_base import MODAL_MOUNTS
from suno_utils.gpt import chirp_v2_5 as chirp_v2
from suno_utils.utils.text import read_jsonl
from suno_utils.utils.s3 import list_s3_dir, read_from_s3
from suno_utils.tasks.hoot import (
    encode_filepaths,
    encode,
    clean_text,
    encode_and_align,
    _get_alignable_tokens,
    _assign_word_timings,
    get_aligned_lyrics,
    ctc_align,
    load_model_list,
    get_word_timing_from_audio_and_lyrics,
    _merge_into_lines,
    decode_logits,
    load_model,
)
from suno_utils.tasks.shimmerscore import shimmerscore
from suno_utils.utils.metrics import get_cer
from suno_utils.tasks.ear import load_model


from suno_utils.diffusion.generation import (
    preload_dit_model,
    preload_tokenizer,
    TOKENIZER_FILEPATH,
    SEMANTIC_MODEL_FILEPATH,
    SEMANTIC_CLUSTERS_FILEPATH,
    _retrieve_models,
)


from suno_utils.tasks.mert_25 import (
    preload_models as preload_semantic_models,
    encode as encode_semantic,
)


from suno_utils.diffusion import generation as diffusion_gen
from suno_utils.tasks.upsample_engine import UpsampleEngine, Request, Job

MOUNT_PATH = "/suno/models"

aws_secret = modal.Secret.from_name("studio-aws")
SECRETS = [
    aws_secret,
    modal.Secret.from_dict(
        {
            "SUNO_ASSETS_PATH": "/suno/models/assets",
            "XDG_CACHE_HOME": "/suno/models/",
        }
    ),
    modal.Secret.from_name("api-callback-token"),
    modal.Secret.from_name("datadog-metrics"),
]

base_image = (
    modal.Image.from_registry("nvidia/cuda:12.4.0-devel-ubuntu22.04", add_python="3.10")
    .apt_install(
        "curl", "ffmpeg", "sox", "unzip", "libsox-fmt-mp3", "zlib1g-dev", "git", "clang"
    )
    .run_commands(
        [
            'curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"',
            "unzip -q awscliv2.zip",
            "./aws/install",
        ]
    )
    .dockerfile_commands(
        [
            "COPY --from=datadog/serverless-init:1.2.1 /datadog-init /app/datadog-init",
            'ENTRYPOINT ["/app/datadog-init"]',
        ]
    )
    .pip_install("torch==2.5.1", "torchaudio==2.5.1")
    .pip_install(
        "flashinfer-python", index_url="https://flashinfer.ai/whl/cu124/torch2.5/"
    )
    .pip_install_private_repos(
        "github.com/suno-ai/glockenspiel.git@a5dba4e50#subdirectory=descript-audio-codec&egg=descript-audio-codec",
        git_user="mcamac",
        secrets=[modal.Secret.from_name("victor-modal-github-token")],
    )
    .pip_install_private_repos(
        "github.com/suno-ai/neon.git@1c83548#subdirectory=hoot",
        git_user="mcamac",
        secrets=[modal.Secret.from_name("victor-modal-github-token")],
    )
    .pip_install(
        "boto3",
        "transformers",
        "tokenizers",
        "encodec",
        "ctc_segmentation",
        "psutil",
        "redis",
        "pydantic",
        "nnAudio",
        "rpyc",
        "biopython>=1.81",  # TODO: don't love this depdendency, for hoot
        "pynvml",  # for torch cuda utilization
        "torchsde",
        "ninja",
        "wheel",
    )
    .pip_install_from_pyproject(
        "/home/christian/code/glockenspiel/suno_utils/pyproject.toml",
    )
    .run_commands(  # This is really slow
        "git clone https://github.com/Dao-AILab/flash-attention.git",
        "cd flash-attention/hopper && python setup.py install",
        gpu="h100",
    )
    .apt_install(
        "libogg0",
        "libopus0",
        "opus-tools",
    )
    .pip_install("transformers==4.44.0", "wandb")
)


def calculate_stereo_width(waveform):
    # Split into left and right channels
    left = waveform[0]
    right = waveform[1]

    # Compute mid/side representation
    mid = (left + right) / 2
    side = (left - right) / 2

    # Compute RMS energy of mid and side channels
    mid_energy = torch.sqrt(torch.mean(mid**2))
    side_energy = torch.sqrt(torch.mean(side**2))

    # Compute stereo width based on mid/side ratio
    # Normalize to range 0-1 using sigmoid-like function
    width_ratio = (side_energy / (mid_energy + 1e-8)).item()
    stereo_width = 2 * (1 / (1 + np.exp(-width_ratio)) - 0.5)

    return stereo_width


def calculate_loudness(waveform, sr):
    meter = pyln.Meter(sr)
    lufs_db = meter.integrated_loudness(waveform)
    return lufs_db


def calculate_loudness_factor(waveform, sr):
    meter = pyln.Meter(sr)
    normalized_waveform = waveform / np.clip(np.max(np.abs(waveform)), 1e-10, None)
    lufs_db = meter.integrated_loudness(normalized_waveform)
    return lufs_db


def calculate_possible_clipped_samples(waveform):
    # Convert to numpy if it's a torch tensor
    if isinstance(waveform, torch.Tensor):
        waveform_np = waveform.numpy()
    else:
        waveform_np = waveform

    # Count samples that are at or above the clipping threshold
    return (
        np.sum(np.abs(waveform_np) >= 1.0).item()
        if isinstance(np.sum(np.abs(waveform_np) >= 1.0), torch.Tensor)
        else np.sum(np.abs(waveform_np) >= 1.0)
    )


def calculate_average_spectrum_db(waveform, n_fft=16384, hop_length=8192):
    # Keep as torch tensor or convert to torch tensor if it's numpy
    if not isinstance(waveform, torch.Tensor):
        waveform = torch.from_numpy(waveform)

    # Calculate the average spectrum using STFT for efficiency
    n_fft = 2048  # Choose an appropriate FFT size
    hop_length = n_fft // 4  # Standard hop length

    # Compute STFT using torch
    if waveform.dim() > 1:
        # For stereo, compute STFT for each channel
        stft_results = []
        for channel in range(waveform.shape[0]):
            stft = torch.stft(
                waveform[channel],
                n_fft=n_fft,
                hop_length=hop_length,
                window=torch.hann_window(n_fft),
                return_complex=True,
            )
            # Get magnitude
            stft_magnitude = torch.abs(stft)
            stft_results.append(stft_magnitude)

        # Average across time frames for each channel
        magnitude_spectrum = torch.stack(
            [torch.mean(stft, dim=1) for stft in stft_results]
        )
    else:
        # For mono
        stft = torch.stft(
            waveform,
            n_fft=n_fft,
            hop_length=hop_length,
            window=torch.hann_window(n_fft),
            return_complex=True,
        )
        # Get magnitude
        stft_magnitude = torch.abs(stft)
        magnitude_spectrum = torch.mean(stft_magnitude, dim=1)

    # Convert to dB scale
    spectrum_db = 20 * torch.log10(
        magnitude_spectrum + 1e-10
    )  # Adding small value to avoid log(0)

    # Convert to numpy for consistency with the rest of the code
    return spectrum_db.numpy()


def calculate_average_stereo_spectrum(waveform, sr):
    assert waveform.dim() == 2 and waveform.shape[0] == 2
    # split into left and right channels
    left = waveform[0]
    right = waveform[1]

    # compute mid and side channels
    mid = (left + right) / 2
    side = (left - right) / 2

    # calculate spectrum for mid and side channels
    spectrum_mid = calculate_average_spectrum_db(mid, sr)
    spectrum_side = calculate_average_spectrum_db(side, sr)

    return spectrum_mid, spectrum_side


def calculate_spectrum_evolution(waveform, sr, n_fft=16384, hop_length=8192):
    # compute spectrum for first 30s
    waveform_first = waveform[:, : 30 * sr]
    spectrum_first = calculate_average_spectrum_db(waveform_first, n_fft, hop_length)

    # compute spectrum for last 30s
    waveform_last = waveform[:, -30 * sr :]
    spectrum_last = calculate_average_spectrum_db(waveform_last, n_fft, hop_length)

    return spectrum_first, spectrum_last


def analyze_audio(filepath):
    audio, sr = torchaudio.load(filepath)

    if sr != 48000:
        audio = torchaudio.functional.resample(audio, sr, 48000)

    # calculate loudness
    lufs_db = calculate_loudness(audio.permute(1, 0).numpy(), sr)
    lufs_db_factor = calculate_loudness_factor(audio.permute(1, 0).numpy(), sr)

    # calculate stereo width
    stereo_width = calculate_stereo_width(audio)

    # clipped samples
    clipped_samples = calculate_possible_clipped_samples(audio)

    # average spectrum
    average_spectrum_db = calculate_average_spectrum_db(audio)

    # average stereo spectrum
    average_stereo_spectrum_mid, average_stereo_spectrum_side = (
        calculate_average_stereo_spectrum(audio, sr)
    )

    # spectrum evolution
    spectrum_first, spectrum_last = calculate_spectrum_evolution(audio, sr)

    return {
        "lufs_db": lufs_db,
        "lufs_db_factor": lufs_db_factor,
        "stereo_width": stereo_width,
        "clipped_samples": clipped_samples,
        "average_spectrum_db": average_spectrum_db,
        "average_spectrum_db_first": spectrum_first,
        "average_spectrum_db_last": spectrum_last,
        "average_stereo_spectrum_mid": average_stereo_spectrum_mid,
        "average_stereo_spectrum_side": average_stereo_spectrum_side,
    }


def _reload_models_if_needed(hoot_filepath, hoot_tokenizer_filepath):
    model_list = load_model_list(
        checkpoint_filepath=hoot_filepath,
        tokenizer_filepath=hoot_tokenizer_filepath,
        n_gpus=None,
    )
    model = model_list[0]["model"]
    tokenizer = model_list[0]["tokenizer"]
    return model_list, model, tokenizer


class GenerateWorker:
    def __init__(
        self,
        dit_model_filepath: str,
        output_path: str,
        test_type: str,
    ):
        self.output_path = output_path
        self.test_type = test_type
        start_time = time.time()
        print("Start loading models")

        # tokenizer_filepath = "s3://suno-data/georg/models/tokenizers/tokenizer_60k.json"

        # gpt_ckpt_path = chirp_v2._get_model_if_needed(gpt_ckpt, cache_dir=MOUNT_PATH)
        # tokenizer_path = chirp_v2._get_model_if_needed(
        #    tokenizer_filepath, cache_dir=MOUNT_PATH
        # )
        # print(tokenizer_path)

        # N_BATCH = 2
        # engine = Engine(
        #    gpt_ckpt_path,
        #    tokenizer_path=tokenizer_path,
        #    max_sequences=4 * N_BATCH,
        ##     compile=False,
        # )
        # cfg = engine.model.config

        # self.engine = engine
        # self.cfg = cfg

        # load diffusion model
        num_gpus = torch.cuda.device_count()
        cuda_device = torch.cuda.current_device()
        print(f"Found {num_gpus} GPUs. Using GPU {cuda_device}.")

        tokenizer_filepath = "s3://suno-data/georg/models/tokenizers/tokenizer_60k.json"
        semantic_model_filepath = "s3://suno-data/georg/models/semantic/mert_25.pt"
        semantic_clusters_filepath = (
            "s3://suno-data/georg/models/semantic/mert_25_2x4k.npy"
        )
        codec_filepath = CODEC_FILEPATH

        _ = diffusion_gen.preload_dit_model(
            dit_model_filepath=dit_model_filepath,
            use_ema_if_exists=True,
            compile=False,
            weights_precision=torch.bfloat16,
        )
        _ = preload_tokenizer(tokenizer_filepath)
        _ = preload_semantic_models(semantic_model_filepath, semantic_clusters_filepath)
        _ = preload_codec_models(codec_filepath)

        # print(f"CHUNK_SIZE_SCHEDULE: {CHUNK_SIZE_SCHEDULE}")
        # self.diffusion_engine = UpsampleEngine(chunk_size_schedule=CHUNK_SIZE_SCHEDULE)
        self.diffusion_engine = UpsampleEngine(min_chunk_size=30 * 25)
        # self.diffusion_engine = UpsampleEngine(
        #    min_chunk_size=750, vae_version="v_vae_25_tuned_2"
        # )

        # load hoot model
        print("Loading hoot model")
        hoot_filepath = "s3://suno-data/christian/checkpoints/hoot_v3.pt"
        hoot_tokenizer_filepath = (
            "s3://suno-data/christian/checkpoints/hoot_v3_tokenizer_v3.pt"
        )
        self.hoot_model_list, self.hoot_model, self.hoot_tokenizer = (
            _reload_models_if_needed(hoot_filepath, hoot_tokenizer_filepath)
        )

        # load ear model
        ear_model_filepath = "s3://suno-data/christian/checkpoints/ear/ear_v2_s3080.pt"
        self.ear_model = load_model(ear_model_filepath, compile=True)

        print(
            f"Finish loading models. Took {round(time.time() - start_time, 2)} seconds"
        )

    @staticmethod
    def download_models(dit_model_filepath, dir_path=MOUNT_PATH):
        """Download diffusion models."""
        print("Start downloading models")
        _ = diffusion_gen.get_model_if_needed(
            CODEC_FILEPATH,
            cache_dir=dir_path,
        )
        _ = diffusion_gen.get_model_if_needed(
            diffusion_gen.SEMANTIC_MODEL_FILEPATH, cache_dir=dir_path
        )
        _ = diffusion_gen.get_model_if_needed(
            diffusion_gen.SEMANTIC_CLUSTERS_FILEPATH, cache_dir=dir_path
        )
        _ = diffusion_gen.get_model_if_needed(
            diffusion_gen.CODEC_FILEPATH, cache_dir=dir_path
        )
        _ = diffusion_gen.get_model_if_needed(dit_model_filepath, cache_dir=dir_path)

        # _ = chirp_v2._get_model_if_needed(gpt_ckpt, cache_dir=dir_path)
        # _ = chirp_v2._get_model_if_needed(chirp_v2.TOKENIZER_PATH, cache_dir=dir_path)

        print("Finish downloading models")

    def generate(self, work_item):
        global models

        """Generate audio from a work item."""
        # when saving to s3 we will use a structure like this:
        # self.output_path/
        #   item_id/
        #     original_semantic.npz
        #     0_generated_audio.mp3
        #     0_generated_semantic.npz
        #     0_metadata.json
        #     1_generated_audio.mp3
        #     1_generated_semantic.npz
        #     1_metadata.json
        #     ...
        #     metadata.json

        for item in work_item:
            item_id = item["id"]

            # if we have s3_filepath, this is original audio
            # so we will need to encode vae latents and semantic codes
            # the s3_filepath will be the positive example and the upsampled audio will be the negative
            if "s3_filepath" in item:
                s3_filepath = item["s3_filepath"]
                # read audio from s3 and then semantic encode
                audio = Audio.from_s3(s3_filepath, n_channels=2)

                if SAVE_CYCLED_VAE:
                    # encode the vae latents
                    vae_latents_cycled = codec_encode(
                        audio.convert(
                            sample_rate=48_000, byte_width=2, n_channels=2
                        ).normalize_volume(target_db=-16)
                    )

                    with tempfile.TemporaryDirectory() as td:
                        vae_latents_path = os.path.join(td, f"{item_id}_pos_vae.npz")
                        np.savez(
                            vae_latents_path,
                            vae_latents=vae_latents_cycled.astype(np.float16),
                        )

                        s3_filepath = os.path.join(
                            self.output_path,
                            f"{item_id}",
                            f"{item_id}_vae.npz",
                        )
                        s3_client.upload_file(
                            vae_latents_path,
                            "suno-data",
                            s3_filepath,
                            ExtraArgs={"ContentType": "application/octet-stream"},
                        )

                if CYCLE_ONLY:
                    continue

                # also encode semantic codes
                codes = encode_semantic(
                    audio.convert(sample_rate=24_000, byte_width=2, n_channels=1)
                ).astype(np.int64)

                if SAVE_CODES:
                    with tempfile.TemporaryDirectory() as td:
                        codes_path = os.path.join(td, f"{item_id}_semantic.npz")
                        np.savez(codes_path, codes=codes)

                        s3_filepath = os.path.join(
                            self.output_path,
                            f"{item_id}",
                            f"{item_id}_semantic.npz",
                        )
                        s3_client.upload_file(
                            codes_path,
                            "suno-data",
                            s3_filepath,
                            ExtraArgs={"ContentType": "application/octet-stream"},
                        )
            # if we dont have the s3_filepath, this is a generated audio
            # so we will pull the semantic codes from s3
            else:
                # load the semantic codes from s3
                s3_filepath = f"s3://suno-data-uploads/studio/uploads/{item_id}.npz"

                try:
                    data = read_from_s3(s3_filepath, read_f=np.load)

                    if "v3.0_raw" in data:
                        codes = data["v3.0_raw"]
                    elif "v3.5_raw" in data:
                        codes = data["v3.5_raw"]
                    elif "v4.0_raw" in data:
                        codes = data["v4.0_raw"]
                    elif "v4.5_raw" in data:
                        codes = data["v4.5_raw"]
                    elif "v5.0_raw" in data:
                        codes = data["v5.0_raw"]
                    else:
                        raise ValueError(f"No codes found for {item_id}")

                except Exception as e:
                    print(f"Error loading {s3_filepath}: {e}")
                    continue

            semantic_codes = torch.from_numpy(codes[:, 0]).long()  # .cuda()

            # if tags is a list, join it into a string
            if isinstance(item["tags"], list):
                tags_str = ", ".join(item["tags"][:5])
            else:
                tags_str = item["tags"]

            if tags_str is None:
                tags_str = ""
            lyrics = item["text"]

            # Calculate original audio CER if we have original audio
            original_cer = None
            if "s3_filepath" in item and lyrics != "":
                print("Calculating original audio CER...")
                with tempfile.TemporaryDirectory() as td:
                    original_audio_path = os.path.join(td, f"{item_id}_original.mp3")
                    audio.write_hq_mp3(original_audio_path)

                    out = encode_filepaths([original_audio_path], return_logits=True)
                    basic_cleaned_lyrics = lyrics
                    decoded_preds = self.hoot_tokenizer.decode_logits(
                        out[0], prior_text=basic_cleaned_lyrics
                    )
                    true_text_norm = clean_text(basic_cleaned_lyrics)
                    original_cer = round(get_cer(true_text_norm, decoded_preds), 3)
                    print(f"Original audio CER: {original_cer}")

            if DIFFUSION_SEED is None:
                diffusion_seed = 0
                for char in item_id:
                    diffusion_seed = (diffusion_seed * 31 + ord(char)) % 1000000
                print(f"Generated seed from '{item_id}': {diffusion_seed}")
            else:
                diffusion_seed = DIFFUSION_SEED
                print(f"Using seed from config: {diffusion_seed}")

            diffusion_steps = DIFFUSION_STEPS
            noise_ctx_level = np.random.uniform(0.5, 1.0)
            noise_ctx_pad_len = NOISE_CTX_PAD_LEN
            diffusion_seed = np.random.randint(0, 1000000)
            rho = RHO
            sigma_min = SIGMA_MIN
            sigma_max = SIGMA_MAX

            min_steps = 8
            max_steps = 32

            # because of distill model we pin these parameters
            if "distill" in DIT_MODEL_FILEPATH:
                text_cfg_coef = 1.0
            else:
                text_cfg_coef = np.random.uniform(1.0, 3.0)

            # 50% of the time we will run a trajectory to an intermediate point
            # 50% of the time we will run a trajectory to the end
            history_vae_latents = None
            use_trajectory = np.random.rand() < 0.6 and semantic_codes.shape[0] > 2000
            if use_trajectory:
                print("Running trajectory to an intermediate point")
                # so, first we will run a trajectory to an intermediate point
                # then we will use the last 30s of the trajectory to run two alternative n+1 trajectories
                # we will then save the two alternative trajectories and the original trajectory (conditioning only)
                # this will give us 3 VAEs sequences technically, but for simplicity we will just copy the conditioning
                # to the start of both alternative trajectories.
                diffusion_steps = np.random.randint(min_steps, max_steps + 1)
                init_cfg = diffusion_gen.DiffusionGenerationConfig(
                    steps=diffusion_steps,
                    lyrics=lyrics,
                    tags=tags_str,
                    text_cfg_coef=text_cfg_coef,
                    ctx_cfg_coef=CTX_CFG_SCALE,
                    codec_scale_factor=CODEC_SCALE_FACTOR,
                    scale_ctx_vector=SCALE_CTX_VECTOR,
                    noise_ctx_level=noise_ctx_level,
                    noise_ctx_pad_len=noise_ctx_pad_len,
                    rho=rho,
                    sigma_min=sigma_min,
                    sigma_max=sigma_max,
                    seed=diffusion_seed,
                    objective=OBJECTIVE,
                    sampler_type=SAMPLER_TYPE,
                )

                # we will crop the semantic codes to a random length leaving at least 750 tokens at the end
                crop_len = random.randint(750, semantic_codes.shape[0] - 750)
                init_semantic_codes = semantic_codes[:crop_len]
                # convert crop_len to a time in seconds
                start_s = crop_len / 25
                print(
                    f"Cropping semantic codes to {crop_len} tokens, {semantic_codes.shape[0]} total"
                )
                cropped_semantic_codes = semantic_codes[crop_len:]
                cropped_semantic_codes = cropped_semantic_codes[:750]

                request = Request(
                    id="dummy",
                    generation_config=init_cfg,
                    tokens=init_semantic_codes,
                    input_tokens_finished=True,
                )
                result = self.diffusion_engine.run_request(request)
                history_vae_latents = torch.concat(result.vae_latents)

                # save out the history vae latents
                with tempfile.TemporaryDirectory() as td:
                    history_vae_latents_path = os.path.join(
                        td, f"{item_id}_history_vae.npz"
                    )
                    np.savez(
                        history_vae_latents_path,
                        vae_latents=history_vae_latents.cpu()
                        .numpy()
                        .astype(np.float16),
                    )

                    s3_filepath = os.path.join(
                        self.output_path,
                        f"{item_id}",
                        f"{item_id}_history_vae.npz",
                    )
                    s3_client.upload_file(
                        history_vae_latents_path,
                        "suno-data",
                        s3_filepath,
                        ExtraArgs={"ContentType": "application/octet-stream"},
                    )

            else:
                # pick a random starting index and crop to one chunk
                if semantic_codes.shape[0] <= 750:
                    print(
                        f"Warning: semantic_codes too short ({semantic_codes.shape[0]} tokens), skipping"
                    )
                    continue
                start_idx = np.random.randint(0, semantic_codes.shape[0] - 750)
                cropped_semantic_codes = semantic_codes[start_idx : start_idx + 750]
                print(
                    f"Cropping semantic codes to {cropped_semantic_codes.shape[0]} tokens, {semantic_codes.shape[0]} total"
                )
                start_s = start_idx / 25
                print(
                    f"Cropping semantic codes to {start_s} seconds, {semantic_codes.shape[0]} total"
                )

            with tempfile.TemporaryDirectory() as td:

                # copy semantic codes to s3 also
                semantic_codes_path = os.path.join(td, f"{item_id}_semantic.npz")
                np.savez(
                    semantic_codes_path,
                    semantic_codes=cropped_semantic_codes.cpu().numpy(),
                )

                s3_filepath = os.path.join(
                    self.output_path,
                    f"{item_id}",
                    f"{item_id}_semantic.npz",
                )
                s3_client.upload_file(
                    semantic_codes_path,
                    "suno-data",
                    s3_filepath,
                    ExtraArgs={
                        "ContentType": "application/octet-stream",
                    },
                )

            # now we will run the n+1 trajectories and find the best pair
            generated_clips = []  # Store all generated clips

            for n in range(MAX_UPSAMPLES):
                # we will crop the semantic codes to a random length leaving at least 750 tokens at the end
                diffusion_steps = np.random.randint(min_steps, max_steps + 1)
                diffusion_seed = np.random.randint(0, 1000000)
                noise_ctx_level = np.random.uniform(0.5, 1.0)

                if "distill" in DIT_MODEL_FILEPATH:
                    text_cfg_coef = 1.0
                else:
                    text_cfg_coef = np.random.uniform(1.0, 3.0)

                if history_vae_latents is not None:
                    generation_history_latents = history_vae_latents
                    print(
                        f"Generation history latents length: {generation_history_latents.shape[0]}"
                    )
                else:
                    generation_history_latents = None
                    print("Generation history latents is None")
                # check generation_history_latents length is 750
                # if generation_history_latents is not None:
                #    if generation_history_latents.shape[0] != 750:
                #        generation_history_latents = None

                gen_cfg = diffusion_gen.DiffusionGenerationConfig(
                    steps=diffusion_steps,
                    lyrics=lyrics,
                    tags=tags_str,
                    text_cfg_coef=text_cfg_coef,
                    ctx_cfg_coef=CTX_CFG_SCALE,
                    codec_scale_factor=CODEC_SCALE_FACTOR,
                    scale_ctx_vector=SCALE_CTX_VECTOR,
                    noise_ctx_level=noise_ctx_level,
                    noise_ctx_pad_len=noise_ctx_pad_len,
                    rho=rho,
                    sigma_min=sigma_min,
                    sigma_max=sigma_max,
                    seed=diffusion_seed,
                    objective=OBJECTIVE,
                    sampler_type=SAMPLER_TYPE,
                    # we will use the last 30s of the trajectory to run the n+1 trajectory
                    generation_history_latents=generation_history_latents,
                )

                request = Request(
                    id="dummy",
                    generation_config=gen_cfg,
                    tokens=cropped_semantic_codes,
                    input_tokens_finished=True,
                )
                result = self.diffusion_engine.run_request(request)
                output_vae_latents = torch.concat(result.vae_latents)
                # append last 2 seconds of history latents to the output
                if generation_history_latents is not None:
                    output_vae_latents_with_pad = torch.cat(
                        [generation_history_latents[-50:], output_vae_latents]
                    )
                else:
                    output_vae_latents_with_pad = output_vae_latents
                upsampled_audio = decode_stream_to_full_audio(
                    output_vae_latents_with_pad
                )

                metadata = {
                    # "original_audio": item["s3_filepath"],
                    "filename": f"{item_id}_{CHECKPOINT_NAME}_{n}.mp3",
                    "id": item_id,
                    "text": lyrics,
                    "tags": tags_str,
                    "start_s": start_s,
                    "diffusion": {
                        "steps": int(gen_cfg.steps),
                        "seed": int(gen_cfg.seed),
                        "text_cfg_coef": float(gen_cfg.text_cfg_coef),
                        "noise_ctx_level": float(gen_cfg.noise_ctx_level),
                        "codec_scale_factor": float(gen_cfg.codec_scale_factor),
                        "scale_ctx_vector": gen_cfg.scale_ctx_vector,
                        "sampler_type": gen_cfg.sampler_type,
                    },
                }

                # we want to save out
                # audio file of the final audio
                # npz of the estimated semantics
                # metadata json with the original prompt and tags
                # copy some stuff
                # we want to copy the original audio and the npz of the original semantics

                with tempfile.TemporaryDirectory() as td:

                    # save audio to s3
                    upsampled_audio_path = os.path.join(td, f"{item_id}_{n}.mp3")
                    upsampled_audio.write_hq_mp3(upsampled_audio_path)

                    # run hoot evaluation (CER)
                    # check if the lyrics are not empty
                    if lyrics != "":
                        out = encode_filepaths(
                            [upsampled_audio_path], return_logits=True
                        )

                        # get lyrics from

                        basic_cleaned_lyrics = lyrics
                        decoded_preds = self.hoot_tokenizer.decode_logits(
                            out[0], prior_text=basic_cleaned_lyrics
                        )
                        true_text_norm = clean_text(basic_cleaned_lyrics)
                        cer_val = round(get_cer(true_text_norm, decoded_preds), 3)
                        metadata["hoot_cer"] = cer_val  # add cer to metadata
                        print("hoot cer: ", metadata["hoot_cer"])

                        # Store this clip for later comparison
                        clip_data = {
                            "n": n,
                            "cer": cer_val,
                            "metadata": metadata.copy(),
                            "upsampled_audio": upsampled_audio,
                            "output_vae_latents": output_vae_latents,
                            "cropped_semantic_codes": cropped_semantic_codes,
                            "gen_cfg": gen_cfg,
                        }
                        generated_clips.append(clip_data)

                    else:
                        metadata["hoot_cer"] = None

                    # run ear evaluation (quality score)
                    # check if the length of the audio is greater than 5 seconds
                    if upsampled_audio.duration_s > 5.0:
                        quality_score = self.ear_model.get_score(upsampled_audio_path)
                        metadata["ear_score"] = (
                            quality_score  # add quality score to metadata
                        )
                        print("ear score: ", metadata["ear_score"])
                    else:
                        metadata["ear_score"] = None

                    # run shimmer score evaluation
                    shimmer_score = shimmerscore(upsampled_audio_path)
                    metadata["shimmer_score"] = shimmer_score

                    # compute the similarity score in audio between the two clips

                    # run the other evals
                    audio_analysis = analyze_audio(upsampled_audio_path)
                    # add all the keys in audio_analysis to metadata
                    for key, value in audio_analysis.items():
                        metadata[key] = value

                    s3_filepath = os.path.join(
                        self.output_path,
                        f"{item_id}",
                        (f"{item_id}_{CHECKPOINT_NAME}_{n}.mp3"),
                    )
                    print(f"Uploading clip {n} to {s3_filepath}")
                    s3_client.upload_file(
                        upsampled_audio_path,
                        "suno-data",
                        s3_filepath,
                        ExtraArgs={
                            "ContentType": "audio/mpeg",
                        },
                    )

                    # save the vae latents
                    vae_latents_path = os.path.join(
                        td,
                        (f"{item_id}_{CHECKPOINT_NAME}_{n}_upsampled_vae.npz"),
                    )
                    np.savez(
                        vae_latents_path,
                        vae_latents=output_vae_latents.cpu().numpy().astype(np.float16),
                    )

                    s3_filepath = os.path.join(
                        self.output_path,
                        f"{item_id}",
                        f"{item_id}_{CHECKPOINT_NAME}_{n}_upsampled_vae.npz",
                    )
                    s3_client.upload_file(
                        vae_latents_path,
                        "suno-data",
                        s3_filepath,
                        ExtraArgs={
                            "ContentType": "application/octet-stream",
                        },
                    )

                    # save the metadata
                    metadata_path = os.path.join(td, f"{item_id}_{n}_metadata.npz")
                    np.savez(metadata_path, **metadata)

                    # move the metadata to s3
                    s3_filepath = os.path.join(
                        self.output_path,
                        f"{item_id}",
                        f"{item_id}_{CHECKPOINT_NAME}_{n}__metadata.npz",
                    )
                    s3_client.upload_file(
                        metadata_path,
                        "suno-data",
                        s3_filepath,
                        ExtraArgs={
                            "ContentType": "application/octet-stream",
                        },
                    )


# prod diffusion model
# DIT_MODEL_FILEPATH = "s3://suno-data/tony/tmp/diff/dit_v3_dpo_t10_3k_5e6_b100_t25.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/georg/tmp/2b_prefix_ft.pt"
# 2b v45
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v45_2b_step_2_600_000.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/dpo/v1_t6_1E6_beta100_n8_bt4.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t6_2E6_beta100_n8_bt4.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t6_5E6_beta100_n16_bt4.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t6_5E6_beta100_n8_bt4_30k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t10_5E6_beta100_n8_bt4_9k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v45_2b_shared_ctx_s3784.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_infill_t6_5E6_beta100_n16_bt4_9k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_infill_t11_5E6_beta100_n16_bt4_9k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_infill_t6_5E6_beta100_n16_bt4_6k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t12_5E6_beta100_n16_bt4_9k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t13_5E6_beta100_n16_bt4_9k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t13_5E6_beta100_n16_bt4_9k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t15_5E6_beta100_n16_bt4_9k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_ft_ear_10k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_ft_ear_20k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_infill_shared_base_200k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_infill_v1_t6_5E6_beta100_n16_bt4_30k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_ft_ear_100k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_ft_ear_5e5_150k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_infill_shared_base_600k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_ft_ear_t3_5e5_200k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_base_ear_sft_50k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_infill_v1_t17_5E6_beta100_n16_bt4_9k_repro_main_3k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t17_5E6_beta100_n16_bt4_9k_repro_mai_ema.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_infill_v1_t17_5E6_beta100_n16_bt4_9k_repro_main_3k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_base_ear_sft_100k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t17_5E6_beta1000_n16_bt4_9k_repro_main_6k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t17_5E6_beta1000_n16_bt4_9k_repro_main_3k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t17_5E6_beta1000_n16_bt4_2k_repro_main.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t6_5E6_beta1000_n16_bt4_2k_repro_main.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_base_ear_sft_t3+t5_40k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_ft_ear_t4_5e5_180k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_ft_ear_t4_5e5_270k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t6_2E6_beta100_n16_bt4_1k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_base_ear_sft_t3_190k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_v45_infill_ear_sft_3e5_t6_100k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_base_ear_sft_t3_210k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t17_2E6_beta100_n16_bt4_1p5k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t17_2E6_beta5000_n8_bt4_1p5k_fix.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_base_ear_sft_t3_230k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t6_2E6_beta5000_n8_bt4_3k_fix.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t6_5E6_beta100_n8_bt4_3k_acc16_fix_3k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t6_5E6_beta100_n8_bt4_3k_acc16_fix_last.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_v45_infill_ear_sft_3e5_t6_250k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t18_1E6_beta100_n32_bt4_3k_acc4_fix_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_sft_t6_dpo_t18_1E6_beta100_n32_bt4_1k_acc8_fix_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_sft_t6_dpo_t18_1E6_beta100_n32_bt4_1k_acc8_fix_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t18_1E6_beta100_n32_bt4_1k_acc8_fix_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_genius_t6_sampled_10k_5E6_beta100_n12_bt4_3k_acc4_fix_6k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_sft_t18_dpo_t18_5E6_beta100_n16_bt4_1k_acc8_fix_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/dit_v6_dpo_t11_9k_5e6_b100.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v1_t6_5E6_beta100_n16_bt4.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t18_1E6_beta100_n32_bt4_1k_acc8_fix_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_sft_t6_dpo_t6_5E6_beta100_n32_bt4_1k_acc4_fix_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v2_t3_1E6_beta100_n16_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_v45_infill_ear_sft_5e5_t6_c0_2_30k.pt"


# sft model
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/diff_v2_2b_2mil_ft_infill_20250421_v2.pt"

# current prod model
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v45_2b_step_2mil_ft_8k_infill_apr21_t1_18_cs0.pt"

# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t18+syn_5E6_beta100_n16_bt2_3k_acc_4_6k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t18+syn_5E6_beta100_n16_bt2_1k_acc_8_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_v45_infill_ear_sft_1e5_t7_70k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t18+syn_5E6_beta100_n16_bt2_1k_acc4_sft.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_syn_corr_5E6_beta100_n16_bt2_3k_acc4_sft_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_v45_infill_ear_sft_1e5_t7_380k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_1E6_beta100_n32_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_1E6_beta100_n32_bt4_acc4_3k_3k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_5E6_beta100_n16_bt2_acc8_1k_sft_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_5E6_beta100_n16_bt2_acc8_1k_sft_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_syn_5E6_beta100_n16_bt2_acc8_1k_sft_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_syn_5E6_beta100_n16_bt2_acc8_1k_sft_0_1_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_5E6_beta100_n32_bt4_acc4_3k_1k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_1E6_beta100_n16_bt2_acc8_1k_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_1E6_beta100_n32_bt4_acc4_3k_1k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t2_1E6_beta100_n16_bt4_acc4_1k_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t2_1E6_beta100_n16_bt4_acc4_1k_1k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_ear_1E6_beta100_n4_bt2_acc8_1k_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_ear_neg_0_5_1E6_beta100_n4_bt2_acc8_1k_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_ear_1E6_beta100_n8_bt2_acc8_2k_16k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_apr21_t1_18_cs0_t1_ear_1E6_beta100_n4_bt2_acc8_4k_32k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v3_t1_ear_1E6_beta100_n4_bt2_acc8_4k_32k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t6_1E6_beta100_n16_bt4_acc4_1k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t7_1E6_beta100_n16_bt4_acc4_1k_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_og_d3_t7_1E6_beta100_n16_bt4_acc4_1k_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_og_d3_t9_1E6_beta100_n16_bt4_acc4_1k_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_ear_t1_1E6_beta100_n4_bt2_acc8_4k_32k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t9_2E6_beta100_n16_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t19_1E6_beta100_n16_bt4_acc4_3k_12k.pt"  #
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t10_1E6_beta100_n16_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_flow_resume_750k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t12_1E6_beta100_n16_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t13_1E6_beta100_n16_bt4_acc4_3k_last.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t15_1E6_beta100_n16_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t16_1E6_beta100_n16_bt4_acc4_3k_10k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t17_1E6_beta100_n16_bt4_acc4_3k_last.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t17_1E6_beta100_n16_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t19_1E6_beta100_n8_bt4_acc8_3k_24k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t18_1E6_beta100_n8_bt4_acc8_3k_24k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t20_1E6_beta100_n16_bt16_acc4_6k_24k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t21_1E6_beta100_n16_bt16_acc4_4k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_flow_resume_1_25m.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d3_t10_1E6_beta100_n16_bt16_acc8_3k_24k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_v1_t19_5E6_beta100_n16_bt4_acc4_3k_12k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d4_2_5E6_beta100_n16_bt2_acc4_4k_16k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_flow_4b_1m.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_flow_resume_1_5m.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_flow_4b_1_25m.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d4_3_5E6_beta100_n16_bt2_acc4_4k_16k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v2_infill_d4_t6_freeze_5E6_beta100_n16_bt2_acc4_4k_8k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_v45_infill_5e5_sft_log_snr_20k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_flow_resume_1_75m.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_25hz_v45_infill_shared_flow_4b_resume_2m.pt"
# DIT_MODEL_FILEPATH = (
#    "s3://suno-data/christian/checkpoints/diffusion/4n_25hz_v45_distill_adv_100k.pt"
# )
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v45_2b_step_2mil_ft_8k_infill_apr21_d3_v10.pt"
# DIT_MODEL_FILEPATH = (
#    "s3://suno-data/christian/checkpoints/diffusion/4n_25hz_v45_distill_adv2.pt"
# )
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_25hz_v45_infill_shared_flow_5e5_sft_50k.pt"
# DIT_MODEL_FILEPATH = (
#    "s3://suno-data/christian/checkpoints/diffusion/8n_2b_adv_bs2_N5_5e6_001_50k.pt"
# )
# DIT_MODEL_FILEPATH = (
#    "s3://suno-data/christian/checkpoints/diffusion/4n_2b_adv_bs2_N5_5e6_acc4_t1.pt"
# )
# /app/suno/modal/models/tony/tmp/diff/v45_2b_step_2mil_ft_8k_infill_apr21_t1_18_cs0.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/8n_2b_flow_distill_bs1_N5_c5e5_g5e6_alt_dmd_cfg_1p5_cosine_nu1_0p1_residual_70k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/16n_2b_flow_distill_bs1_N5_c5e5_g1e6_alt_dmd_cfg_2_residual_sft_220k.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v3_flow_distill_s3177_lm_t1_0_7_cut_history_4x_1E6_beta100_n8_bt2_acc4_2k_last.pt"
# DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v3_flow_distill_v1_t18_1E6_beta100_n4_bt2_acc2_4k_last.pt"
#DIT_MODEL_FILEPATH = (
#    "s3://suno-data/christian/checkpoints/diffusion/4n_25hz_2b_flow_5e5_sft_t8_500k.pt"
#)
DIT_MODEL_FILEPATH = "s3://suno-data/christian/checkpoints/diffusion/v3_flow_sft_t8_rd1_pair_t3_1E6_beta100_n16_bt2_noise_1k_last.pt"


CHECKPOINT_NAME = DIT_MODEL_FILEPATH.split("/")[-1].replace(".pt", "")

# OUTPUT_STR = "farm-speaker-desk"
# OUTPUT_STR = "pencil-helmet-window"
# OUTPUT_STR = "walking-flowers"
# OUTPUT_STR = "v3-bootstrap-data-t4"
# OUTPUT_STR = "v3-distill-data-ctx-t3"
OUTPUT_STR = "v3-base-data-ctx-t3"
# OUTPUT_STR = "v2-infill-data-v1"
# OUTPUT_STR = "v2-diff-step-test"
# OUTPUT_STR = "real-audio-test"
TEST_TYPE = "standard"  # standard, steps
SAVE_CODES = False
SAVE_CYCLED_VAE = False
CYCLE_ONLY = False
GPU_TYPE = "A10G"  # H100, A10G
OBJECTIVE = "rectified_flow" if "flow" in DIT_MODEL_FILEPATH else "v"
SAMPLER_TYPE = "pingpong" if "distill" in DIT_MODEL_FILEPATH else "dpmpp"

# extra params
RHO = 1.0
SIGMA_MIN = 0.5
SIGMA_MAX = 50.0
DIFFUSION_SEED = None  # 42 is default
RANDOMIZE_DIFFUSION_PARAMS = True
USE_ALTERNATE_CFG = False
CTX_CFG_SCALE = 1.0
MAX_UPSAMPLES = 10  # maximum number of attempts to find good pair
N_MAX_REPLICAS = 64
OVERWRITE = True

# IGNORE_HISTORY_EVERY = 2

# use this to add a suffix to the checkpoint name
EXTRA_NAME_SUFFIX = ""

CHECKPOINT_NAME = CHECKPOINT_NAME + EXTRA_NAME_SUFFIX

if "dit_v6_dpo_t11_9k_5e6_b100" in DIT_MODEL_FILEPATH:
    CODEC_SCALE_FACTOR = 2.5
    SCALE_CTX_VECTOR = False
    NOISE_CTX_LEVEL = 0.0
    NOISE_CTX_PAD_LEN = 0
    DIFFUSION_STEPS = 10
    SEMANTIC_SKIP_FACTOR = 1

    CODEC_FILEPATH = "s3://suno-data/christian/25hz_vae_peaq_kl_0.005.pth"

    from suno_utils.tasks.dac_vae_100hz_peaq import (
        preload_models as preload_codec_models,
        decode as codec_decode,
        encode as codec_encode,
        decode_stream_to_full_audio,
    )

else:
    CODEC_SCALE_FACTOR = 0.4
    SCALE_CTX_VECTOR = True
    NOISE_CTX_LEVEL = 0.75
    NOISE_CTX_PAD_LEN = 0
    DIFFUSION_STEPS = 2
    SEMANTIC_SKIP_FACTOR = 1
    NOISE_SCHEDULE = "polyexponential"
    # NOISE_SCHEDULE = "cosine"
    # CHUNK_SIZE_SCHEDULE = [10 * 25, 20 * 25, 30 * 25]  # 10s, 20s, 30s chunks
    # CHUNK_SIZE_SCHEDULE = [30 * 25, 30 * 25, 30 * 25]  # 30s chunks

    CODEC_FILEPATH = "s3://suno-data/minz/models/dac_vae_tuned_25hz.pth"

    from suno_utils.tasks.dac_vae_fixed_25hz import (
        preload_models as preload_codec_models,
        decode as codec_decode,
        encode as codec_encode,
        decode_stream_to_full_audio,
    )


def download_model_wrapper_d():
    # this print is necessary to have modal rerun this when MODEL changes
    # Modal tracks referenced global variables
    # Change the name of the function to force a rerun
    print("Downloading model for history encoder")
    GenerateWorker.download_models(DIT_MODEL_FILEPATH)


image = base_image.run_function(download_model_wrapper_d, secrets=SECRETS)
APP_NAME = f"batch-generate-gpu"
app = modal.App(APP_NAME, image=image, secrets=SECRETS)


@app.cls(
    # gpu=modal.gpu.H100(count=1),
    gpu=modal.gpu.A10G(count=1) if GPU_TYPE == "A10G" else modal.gpu.H100(count=1),
    cpu=4,
    secrets=SECRETS,
    timeout=2 * 60 * 60,
    container_idle_timeout=240,
    # mounts=MODAL_MOUNTS,
    memory=15000,
    concurrency_limit=N_MAX_REPLICAS,
)
class GenerateStub:
    def __init__(self, dit_ckpt: str, output_path: str, test_type: str):
        import torch

        num_gpus = torch.cuda.device_count()
        print(f"Found {num_gpus} GPUs.")
        self.worker = GenerateWorker(
            dit_ckpt,
            output_path,
            test_type,
        )

    @modal.method()
    def generate(self, work_item: list[dict]):
        return self.worker.generate(work_item)


@app.local_entrypoint()
def main():
    # checkpoints in s3://suno-data/christian/checkpoints
    # prompts in s3://suno-data/christian/prompts
    # outputs in s3://suno-data/christian/outputs

    # load the positive prompts
    # work_items = read_from_s3(
    #    "s3://suno-data/christian/sft/pos_interesting_clips_up_u_1_20241201_full.jsonl",
    #    read_f=read_jsonl,
    # )

    # work_items = read_jsonl(
    #    "/home/christian/code/christian/metadata/discogs_subset_sampled_metas.jsonl"
    #

    # work_items = read_jsonl(
    #    "/home/christian/code/christian/metadata/ear/genius_t6_sampled_10k.jsonl"
    # )

    work_items = read_jsonl(
        "/home/christian/code/christian/metadata/sft/interesting_clips_bluejay_t1_20250811_public_only_lang_balanced_30k.jsonl"
    )

    # just do the first 1
    work_items = work_items  # [:10000]
    print(f"Total work items: {len(work_items)}")

    if not OVERWRITE:
        # first check for existing ids in the output path
        existing_ids = list_s3_dir(
            f"s3://suno-data/christian/outputs/{OUTPUT_STR}/",
        )

        existing_ids = [os.path.dirname(f[0]).split("/")[-1] for f in existing_ids]
        existing_ids = list(set(existing_ids))
        print(f"Total existing ids: {len(existing_ids)}")

        ## now remove these from the work items
        work_items = [f for f in work_items if f["id"] not in existing_ids]
    print(f"Total work items remaining: {len(work_items)}")

    chunksize = 1  # num of prompts per worker

    worker = GenerateStub(
        DIT_MODEL_FILEPATH, f"christian/outputs/{OUTPUT_STR}", test_type=TEST_TYPE
    )

    work_items = list(funcy.chunks(chunksize, work_items))
    print(f"Chunksize: {chunksize}, total chunks: {len(work_items)}")

    # print("Testing inference...")
    # t0 = time.time()
    # for work_item in work_items[:1]:
    #    _ = worker.generate.remote(work_item)
    # print(f"{int(round(time.time()-t0))}s for test")

    print("Running batch inference...")
    t0 = time.time()
    _ = list(worker.generate.map(work_items))
    print(round((time.time() - t0) / 60 / 60), "h total for batch generation")
