/**
 * 镭射卡五图预设 — 真实金属银系
 * 参考实体卡：Pokémon holo / BTS photocard / 国产星穹镭射票
 * 5 张卡都是金属底，仅银色微调 + 色带方向/速度不同
 *
 * Prompt 字段：
 *   bgPrompt      — 背景主题描述（不含前缀/后缀，由 Gateway 拼接）
 *   overlayPrompt  — 装饰层描述（同上）
 *   colorHint     — 主色调提示（用于用户 prompt 的配色引导）
 */

export const LASER_BATCH_EXPORT_SIZE = { w: 450, h: 600 }

/** 兼容字段：旧的 rich 模式已弃用 */
export const PRESET_VARIANTS = [
	{
		id: 'dream',
		style: 'dream',
		beam: 'prism',
		backdropMode: 'grating',
		backdropTone: '#A8ACB2', // 冷银
		sheenBandAngle: 135,
		sheenSpeed: 0.35,
		sheenIntensity: 0.40,
		foilCoverage: 0.75,
		laserStrength: 50,
		frostIntensity: 8,
		flowSpeed: 0.35,
		colorHint: '淡紫色 粉色 银色',
		bgPrompt: 'soft dreamy holographic background, lavender and pink layered gradient, gentle bubble bokeh and soft star sparkles, single diagonal sheen sweep at 135°, dreamy celestial mood, no text, no people, no watermark',
		overlayPrompt: 'thin pearl border, soft star scatter, subtle corner brackets',
	},
	{
		id: 'classic',
		style: 'classic',
		beam: 'aurora',
		backdropMode: 'grating',
		backdropTone: '#A89E91', // 香槟银
		sheenBandAngle: 120,
		sheenSpeed: 0.45,
		sheenIntensity: 0.38,
		foilCoverage: 0.70,
		laserStrength: 48,
		frostIntensity: 6,
		flowSpeed: 0.45,
		colorHint: '香槟金 暖金色 浅米色',
		bgPrompt: 'classic vintage refractor holographic surface, warm champagne and pale gold gradient, single diagonal sheen sweep at 120°, soft film grain texture, refined retro cardstock mood, no text, no people, no watermark',
		overlayPrompt: 'warm sepia border, vintage corner motif',
	},
	{
		id: 'holoFull',
		style: 'holoFull',
		beam: 'neon',
		backdropMode: 'grating',
		backdropTone: '#B0ACA6', // 珍珠银
		sheenBandAngle: 150,
		sheenSpeed: 0.30,
		sheenIntensity: 0.50,
		foilCoverage: 0.95,
		laserStrength: 62,
		frostIntensity: 10,
		flowSpeed: 0.30,
		colorHint: '银色 霓虹色 金属银',
		bgPrompt: 'full holographic tech background, silver metallic base with pearl glow, geometric neon circuit lines and star sparks, vivid diagonal sheen sweep at 150°, high foil coverage 95%, futuristic cyber-card mood, no text, no people, no watermark',
		overlayPrompt: 'neon bevel border, sharp diagonal sheen sweep, geometric corner accents',
	},
	{
		id: 'ice',
		style: 'ice',
		beam: 'white',
		backdropMode: 'grating',
		backdropTone: '#9C9993', // 暖银
		sheenBandAngle: 110,
		sheenSpeed: 0.50,
		sheenIntensity: 0.36,
		foilCoverage: 0.60,
		laserStrength: 44,
		frostIntensity: 5,
		flowSpeed: 0.50,
		colorHint: '浅蓝灰 冰蓝 银色',
		bgPrompt: 'cool ice holographic background, pale blue-gray base with crystalline frost texture, snowflake scatter and ice-crack corner motif, fast diagonal sheen sweep at 110° (speed 0.50), crisp clean winter mood, no text, no people, no watermark',
		overlayPrompt: 'thin frosted edge line, sparse ice flake scatter, light frost corner motif',
	},
	{
		id: 'sunset',
		style: 'sunset',
		beam: 'sunset',
		backdropMode: 'grating',
		backdropTone: '#9E958A', // 玫瑰金底
		sheenBandAngle: 140,
		sheenSpeed: 0.40,
		sheenIntensity: 0.42,
		foilCoverage: 0.80,
		laserStrength: 52,
		frostIntensity: 7,
		flowSpeed: 0.40,
		colorHint: '玫瑰金 暖橙色 粉色',
		bgPrompt: 'warm sunset holographic background, rose-gold base with amber and pink layered glow, soft floral corner accents, gentle diagonal sheen sweep at 140° (speed 0.40), romantic dreamy mood, no text, no people, no watermark',
		overlayPrompt: 'thin rose gold border, small heart corner accents',
	},
]

export const LASER_PRESET_IDS = PRESET_VARIANTS.map((p) => p.id)

export function getLaserPresetByIndex(index) {
	const i = Number(index)
	if (!Number.isFinite(i) || i < 0 || i >= PRESET_VARIANTS.length) {
		return PRESET_VARIANTS[0]
	}
	return PRESET_VARIANTS[i]
}

export function getLaserPresetIndexById(presetId) {
	const id = String(presetId || '').trim()
	const idx = PRESET_VARIANTS.findIndex((p) => p.id === id)
	return idx >= 0 ? idx : 0
}

/**
 * 构建 Dify 工作流所需的 render_configs（每个 variant 的完整渲染参数）
 * 用于 POST /api/v1/laser/generate 请求体
 * @param {string[]} [presetIds] 需要生成的 preset ID 列表，默认全部5个
 * @returns {Array<{preset_id: string, grating_config: object, bg_prompt: string, overlay_prompt: string}>}
 */
export function buildRenderConfigs(presetIds) {
	const ids = presetIds || LASER_PRESET_IDS
	return PRESET_VARIANTS
		.filter((p) => ids.includes(p.id))
		.map((p) => ({
			preset_id: p.id,
			grating_config: {
				sheen_band_angle: p.sheenBandAngle,
				sheen_intensity: p.sheenIntensity,
				sheen_speed: p.sheenSpeed,
				foil_coverage: p.foilCoverage,
				backdrop_tone: p.backdropTone,
			},
			bg_prompt: p.bgPrompt || '',
			overlay_prompt: p.overlayPrompt || '',
		}))
}

export { resolveGratingConfig, DEFAULT_BACKDROP_TONE } from './laserGrating.js'

// =========================================================================
// 新增:风格池 + 抽卡(45 个风格,5 档分层)
//   - 旧调用方(激光导出会、success.vue)继续用上方 export,完全兼容
//   - 新调用方(抽卡、稀有度徽章)使用下方 export
// =========================================================================

// 风格池与索引(转自 stylePool.js)
export {
	LASER_STYLE_POOL,
	LASER_STYLE_IDS,
	LASER_STYLE_INDEX,
	RARITY_DISTRIBUTION,
	RARITY_COLORS,
	RARITY_STARS,
} from './stylePool.js'

// 抽卡算法(转自 gacha.js)
export {
	drawGachaStyles,
	drawGachaStyleIds,
	pickRarity,
	pickStyleInRarity,
	findStyleById,
	RARITY_WEIGHTS,
} from './gacha.js'

/**
 * 兼容旧调用方:按数字索引取 style 对象
 * 0-4 仍映射到原 dream/classic/holoFull/ice/sunset(与旧 PRESET_VARIANTS 顺序一致)
 * 5~44 映射到新池子
 * @param {number} index
 */
export function getStyleByIndex(index) {
	const i = Number(index)
	if (!Number.isFinite(i) || i < 0) return LASER_STYLE_POOL[0]
	if (i < 5) {
		const oldIds = ['dream', 'classic', 'holoFull', 'ice', 'sunset']
		return LASER_STYLE_POOL.find((s) => s.id === oldIds[i]) || LASER_STYLE_POOL[0]
	}
	return LASER_STYLE_POOL[i] || LASER_STYLE_POOL[0]
}

/**
 * 兼容旧调用方:按 style id 反查数字索引(用于 success.vue)
 * @param {string} id
 * @returns {number}
 */
export function getStyleIndexById(id) {
	const idx = LASER_STYLE_INDEX[String(id || '')]
	return Number.isFinite(idx) ? idx : 0
}