from __future__ import annotations

from dataclasses import dataclass, field
from pathlib import Path
from typing import Any, Literal

JobState = Literal["PENDING", "RUNNING", "FAILED", "COMPLETED", "CANCEL_REQUESTED", "CANCELLED"]


@dataclass
class Scene:
    start: float
    duration: float
    media: str
    caption: str = ""
    transition: str = "fade"
    background: str = "blur"
    layout: str = "fill"
    effect: str | None = None


@dataclass
class RenderRequest:
    scenes: list[Scene]
    template: str = "tiktok_classic"
    preset: str | None = None
    creative_style: str | None = None
    platform: str | None = None
    output_name: str = "render.mp4"
    voiceover: str | None = None
    background_music: str | None = None
    music_volume: float = 0.316
    music_fade_in: float = 0.0
    music_fade_out: float = 0.0
    music_loop: bool = True
    music_start: float = 0.0
    music_ducking: bool = True
    voice_volume: float = 1.0
    subtitle_format: Literal["srt", "ass"] = "ass"
    auto_subtitles: bool = False
    subtitle_language: str | None = None
    whisper_model_size: str | None = None
    preview: bool = False
    audio_normalize: bool = False
    watermark: str | None = None
    watermark_position: str = "bottom-right"
    intro: str | None = None
    outro: str | None = None
    callback_url: str | None = None
    export_target: str | None = None
    priority: int = 0
    scheduled_at: float | None = None
    normalize: bool = True
    metadata: dict[str, Any] = field(default_factory=dict)


@dataclass
class AIReelsRequest:
    script: str
    voiceover: str
    assets: list[str]
    template: str = "tiktok_classic"
    creative_style: str | None = None
    platform: str | None = None
    output_name: str = "ai_reel.mp4"
    background_music: str | None = None
    music_volume: float = 0.316
    music_fade_in: float = 0.0
    music_fade_out: float = 0.0
    music_loop: bool = True
    music_start: float = 0.0
    music_ducking: bool = True
    voice_volume: float = 1.0


@dataclass
class RenderResult:
    output_path: Path
    commands: list[list[str]]
    metrics: dict[str, Any]
    logs: list[str] = field(default_factory=list)


@dataclass
class TaskResult:
    output_path: Path | None = None
    commands: list[list[str]] = field(default_factory=list)
    metrics: dict[str, Any] = field(default_factory=dict)
    logs: list[str] = field(default_factory=list)


@dataclass
class AssetMetadata:
    path: str
    mime_type: str
    size_bytes: int
    mtime: float
    duration: float = 0.0
    width: int | None = None
    height: int | None = None
    fps: float | None = None
    bitrate: int | None = None
    video_codec: str | None = None
    audio_codec: str | None = None
    has_audio: bool = False
    streams: list[dict[str, Any]] = field(default_factory=list)


@dataclass
class JobRecord:
    job_id: str
    state: JobState
    created_at: float
    updated_at: float
    output_path: str | None = None
    download_token: str | None = None
    callback_url: str | None = None
    export_target: str | None = None
    export_path: str | None = None
    failure_reason: str | None = None
    commands: list[list[str]] = field(default_factory=list)
    logs: list[str] = field(default_factory=list)
    metrics: dict[str, Any] = field(default_factory=dict)