#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright (c) 2025-2026 Renato Xavier da Silveira Rosa
# See [LICENSE](./LICENSE) or [BSD-3-Clause-Clear](https://spdx.org/licenses/BSD-3-Clause-Clear.html)
"""Adapter for the vendored github.com/aedocw/epub2tts-edge repository."""

import subprocess
from pathlib import Path
from typing import Optional

from .vendor_utils import build_run_command

DEFAULT_SPEAKER = "en-US-AndrewNeural"


def _normalize_path(path_input: Path | str) -> Path:
    return Path(path_input)


def _build_command(
    input_source: Path,
    voice: Optional[str] = None,
    backend_cmd: Optional[str] = None,
) -> list[str]:
    command = build_run_command(
        "epub2tts-edge", "epub2tts_edge", backend_cmd=backend_cmd
    )
    command.append(str(input_source))
    if voice:
        command.extend(["--speaker", voice])
    return command


def run(
    input_source: Path | str,
    output_dest: Path | str,
    voice: Optional[str] = None,
    backend_cmd: Optional[str] = None,
) -> subprocess.CompletedProcess:
    input_path = _normalize_path(input_source)
    output_path = _normalize_path(output_dest)
    output_path.parent.mkdir(parents=True, exist_ok=True)

    speaker = voice or DEFAULT_SPEAKER
    command = _build_command(input_path, voice=speaker, backend_cmd=backend_cmd)
    completed = subprocess.run(command, cwd=str(input_path.parent), check=True)

    generated_path = input_path.parent / f"{input_path.stem} ({speaker}).m4b"
    if generated_path != output_path:
        generated_path.replace(output_path)

    return completed