"""Write dataset manifests: metadata.csv, dataset.jsonl, tts_metadata.csv."""

from __future__ import annotations

import csv
from pathlib import Path
from typing import Iterable

from video_vec2wav2_tokenizer.utils.io import DatasetEntry, ensure_dir, write_jsonl
from video_vec2wav2_tokenizer.utils.logging import get_logger

logger = get_logger(__name__)


def write_metadata_csv(path: str | Path, entries: Iterable[DatasetEntry]) -> int:
    """Write ``metadata.csv`` in ``filename|text`` format (pipe-separated)."""
    ensure_dir(Path(path).parent)
    count = 0
    with Path(path).open("w", encoding="utf-8", newline="") as fh:
        writer = csv.writer(fh, delimiter="|", quoting=csv.QUOTE_MINIMAL)
        for entry in entries:
            filename = Path(entry.audio).name
            writer.writerow([filename, entry.text])
            count += 1
    logger.info("Wrote %d rows to %s", count, path)
    return count


def write_dataset_jsonl(path: str | Path, entries: Iterable[DatasetEntry]) -> int:
    """Write ``dataset.jsonl`` with audio/text/duration rows."""
    n = write_jsonl(path, (e.to_jsonl_dict() for e in entries))
    logger.info("Wrote %d rows to %s", n, path)
    return n


def write_tts_metadata_csv(path: str | Path, entries: Iterable[DatasetEntry]) -> int:
    """Write ``tts_metadata.csv`` in ``filename|speaker|text`` format."""
    ensure_dir(Path(path).parent)
    count = 0
    with Path(path).open("w", encoding="utf-8", newline="") as fh:
        writer = csv.writer(fh, delimiter="|", quoting=csv.QUOTE_MINIMAL)
        for entry in entries:
            filename = Path(entry.audio).name
            speaker = entry.speaker or "speaker_001"
            writer.writerow([filename, speaker, entry.text])
            count += 1
    logger.info("Wrote %d rows to %s", count, path)
    return count