/**
 * 合并工程风格与任务风格覆盖（任务覆盖优先，与后端 PromptBuilder 逻辑一致）
 */
export function mergeStyles(
  projectStyle: Record<string, string>,
  taskOverrides: Record<string, string>
): Record<string, string> {
  return { ...projectStyle, ...taskOverrides }
}

export const CUSTOM_PREFIX = 'custom:'

export function isCustomKey(key: string): boolean {
  return key.startsWith(CUSTOM_PREFIX)
}

export function getCustomTags(style: Record<string, string>): string[] {
  return Object.keys(style)
    .filter(isCustomKey)
    .map(key => key.slice(CUSTOM_PREFIX.length))
}

export function addCustomTag(
  style: Record<string, string>,
  tag: string
): Record<string, string> {
  return { ...style, [`${CUSTOM_PREFIX}${tag}`]: 'true' }
}

export function removeCustomTag(
  style: Record<string, string>,
  tag: string
): Record<string, string> {
  const { [`${CUSTOM_PREFIX}${tag}`]: _, ...rest } = style
  return rest
}

/**
 * 风格键分类定义
 */
export interface StyleCategory {
  key: string
  label: string
  options: { value: string; label: string }[]
}

/** 工程类型键名 */
export const PROJECT_TYPE_KEY = 'projectType'

/** 工程类型选项（决定项目整体类型，区别于素材生成的风格标签） */
export const PROJECT_TYPES: { value: string; label: string }[] = [
  { value: '2d-platformer', label: '2D 平台跳跃' },
  { value: 'rpg', label: '角色扮演' },
  { value: 'top-down', label: '俯视视角' },
  { value: 'visual-novel', label: '视觉小说' },
  { value: 'tower-defense', label: '塔防' },
  { value: 'puzzle', label: '益智解谜' },
  { value: 'shooter', label: '射击' },
  { value: 'roguelike', label: '肉鸽' },
]

export const STYLE_CATEGORIES: StyleCategory[] = [
  {
    key: 'artStyle',
    label: '美术风格',
    options: [
      { value: 'pixel', label: '像素' },
      { value: 'cartoon', label: '卡通' },
      { value: 'hand-drawn', label: '手绘' },
      { value: 'vector', label: '矢量' },
      { value: 'flat', label: '扁平' },
    ],
  },
  {
    key: 'palette',
    label: '色调',
    options: [
      { value: 'warm', label: '暖色' },
      { value: 'cool', label: '冷色' },
      { value: 'neutral', label: '中性' },
      { value: 'vibrant', label: '鲜艳' },
      { value: 'muted', label: '柔和' },
      { value: 'monochrome', label: '单色' },
    ],
  },
  {
    key: 'lineWeight',
    label: '线条',
    options: [
      { value: 'none', label: '无' },
      { value: 'thin', label: '细线' },
      { value: 'medium', label: '中等' },
      { value: 'thick', label: '粗线' },
    ],
  },
  {
    key: 'scene',
    label: '场景',
    options: [
      { value: 'forest', label: '森林' },
      { value: 'dungeon', label: '地牢' },
      { value: 'city', label: '城市' },
      { value: 'space', label: '太空' },
      { value: 'underwater', label: '水下' },
      { value: 'desert', label: '沙漠' },
    ],
  },
  {
    key: 'lighting',
    label: '光照',
    options: [
      { value: 'bright', label: '明亮' },
      { value: 'dim', label: '昏暗' },
      { value: 'dramatic', label: '戏剧' },
      { value: 'ambient', label: '环境光' },
      { value: 'neon', label: '霓虹' },
    ],
  },
  {
    key: 'mood',
    label: '情绪',
    options: [
      { value: 'cheerful', label: '欢快' },
      { value: 'dark', label: '黑暗' },
      { value: 'mysterious', label: '神秘' },
      { value: 'epic', label: '史诗' },
      { value: 'calm', label: '平静' },
    ],
  },
]