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from __future__ import annotations

from copy import deepcopy
from typing import Any


PRESETS: dict[str, dict[str, Any]] = {
    "tiktok_9_16_fast": {
        "creative_style": "viral_shorts",
        "platform": "tiktok",
        "template": "tiktok_classic",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "preview": False,
        "normalize": True,
    },
    "youtube_shorts_hd": {
        "creative_style": "viral_shorts",
        "platform": "youtube_shorts",
        "template": "youtube_shorts",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "normalize": True,
    },
    "podcast_square": {
        "creative_style": "podcast_clip",
        "platform": "instagram_feed_square",
        "template": "podcast_style",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "normalize": True,
        "metadata": {"target_aspect": "1:1"},
    },
    "reels_with_subtitles": {
        "creative_style": "story_vlog",
        "platform": "instagram_reels",
        "template": "modern_minimal",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "normalize": True,
    },
    "draft_preview": {
        "creative_style": "product_demo",
        "platform": "tiktok",
        "template": "modern_minimal",
        "subtitle_format": "ass",
        "preview": True,
        "normalize": True,
    },
    "tiktok_music_ducked": {
        "creative_style": "viral_shorts",
        "platform": "tiktok",
        "template": "tiktok_classic",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "audio_normalize": True,
        "music_volume": 0.25,
        "music_fade_in": 0.4,
        "music_fade_out": 1.0,
        "music_loop": True,
        "music_ducking": True,
        "normalize": True,
    },
    "instagram_reels_music": {
        "creative_style": "story_vlog",
        "platform": "instagram_reels",
        "template": "modern_minimal",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "audio_normalize": True,
        "music_volume": 0.28,
        "music_fade_in": 0.3,
        "music_fade_out": 0.8,
        "music_loop": True,
        "music_ducking": True,
        "normalize": True,
    },
    "youtube_landscape_1080p": {
        "creative_style": "news_explainer",
        "platform": "youtube_1080p",
        "template": "news_style",
        "subtitle_format": "ass",
        "auto_subtitles": False,
        "audio_normalize": True,
        "normalize": True,
    },
    "capcut_viral_auto": {
        "creative_style": "viral_shorts",
        "platform": "tiktok",
        "template": "neon_pop",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "audio_normalize": True,
        "music_volume": 0.24,
        "music_fade_in": 0.2,
        "music_fade_out": 0.8,
        "music_loop": True,
        "music_ducking": True,
        "normalize": True,
    },
    "capcut_product_launch": {
        "creative_style": "product_demo",
        "platform": "instagram_reels",
        "template": "product_demo",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "audio_normalize": True,
        "music_volume": 0.18,
        "music_fade_in": 0.3,
        "music_fade_out": 0.7,
        "music_loop": True,
        "music_ducking": True,
        "normalize": True,
    },
    "capcut_cinematic_story": {
        "creative_style": "cinematic_story",
        "platform": "youtube_shorts",
        "template": "cinematic_gold",
        "subtitle_format": "ass",
        "auto_subtitles": True,
        "audio_normalize": True,
        "music_volume": 0.26,
        "music_fade_in": 0.8,
        "music_fade_out": 1.4,
        "music_loop": True,
        "music_ducking": True,
        "normalize": True,
    },
}


def list_presets() -> list[str]:
    return sorted(PRESETS)


def apply_preset(payload: dict[str, Any]) -> dict[str, Any]:
    preset_name = payload.get("preset")
    if not preset_name:
        return payload
    preset = deepcopy(PRESETS.get(preset_name, {}))
    preset.update(payload)
    if "metadata" in PRESETS.get(preset_name, {}) or "metadata" in payload:
        metadata = deepcopy(PRESETS.get(preset_name, {}).get("metadata", {}))
        metadata.update(payload.get("metadata", {}))
        preset["metadata"] = metadata
    return preset