import type { BlockType, TemplateBlockSkeleton, TemplateScope } from "./types";

// block 类型 → i18n 键（实际文本由 useTranslations("lessonPreparation").blockType.${type} 翻译）
// 保留此映射用于：1) 新节点默认标题的 i18n 键查找 2) 类型守卫
export const BLOCK_TYPE_KEYS: Record<BlockType, string> = {
  objective: "objective",
  key_point: "key_point",
  import: "import",
  new_teaching: "new_teaching",
  consolidation: "consolidation",
  summary: "summary",
  homework: "homework",
  blackboard: "blackboard",
  text_study: "text_study",
  exercise: "exercise",
  rich_text: "rich_text",
  reflection: "reflection",
};

// 向后兼容：保留 BLOCK_TYPE_LABELS 名称但值为 i18n 键（实际翻译由组件层完成）
// @deprecated 使用 BLOCK_TYPE_KEYS 或 useTranslations("lessonPreparation").blockType.${type} 替代
export const BLOCK_TYPE_LABELS: Record<BlockType, string> = BLOCK_TYPE_KEYS;

// 富文本类 block（共享同一编辑组件）
export const RICH_TEXT_BLOCK_TYPES: BlockType[] = [
  "objective",
  "key_point",
  "import",
  "new_teaching",
  "consolidation",
  "summary",
  "homework",
  "blackboard",
  "rich_text",
  "reflection",
];

// 系统预设模板骨架（seed 用）
export interface SystemTemplateDef {
  id: string; // 固定 ID，便于幂等
  name: string;
  scope: TemplateScope;
  blocks: TemplateBlockSkeleton[];
}

export const SYSTEM_TEMPLATES: SystemTemplateDef[] = [
  {
    id: "tpl_regular",
    name: "常规课",
    scope: "regular",
    blocks: [
      { type: "objective", title: "教学目标", hint: "明确本课的知识、能力、情感目标" },
      { type: "key_point", title: "教学重难点", hint: "标注重点与难点及突破策略" },
      { type: "import", title: "导入", hint: "情境导入/复习导入/问题导入" },
      { type: "new_teaching", title: "新授", hint: "核心教学活动设计" },
      { type: "consolidation", title: "巩固练习", hint: "课堂练习，检验学习效果" },
      { type: "summary", title: "课堂小结", hint: "归纳本课要点" },
      { type: "homework", title: "作业布置", hint: "课后作业说明（如需下发请用练习块）" },
      { type: "blackboard", title: "板书设计", hint: "板书结构示意" },
    ],
  },
  {
    id: "tpl_review",
    name: "复习课",
    scope: "review",
    blocks: [
      { type: "objective", title: "复习目标" },
      { type: "rich_text", title: "知识网络梳理", hint: "构建知识结构图" },
      { type: "rich_text", title: "典型例题精讲" },
      { type: "rich_text", title: "变式训练" },
      { type: "exercise", title: "当堂检测", hint: "purpose 选 class_practice" },
      { type: "summary", title: "课堂小结" },
    ],
  },
  {
    id: "tpl_experiment",
    name: "实验课",
    scope: "experiment",
    blocks: [
      { type: "objective", title: "实验目的" },
      { type: "rich_text", title: "器材准备" },
      { type: "rich_text", title: "实验步骤" },
      { type: "rich_text", title: "观察记录表" },
      { type: "rich_text", title: "交流讨论" },
      { type: "summary", title: "课堂小结" },
    ],
  },
  {
    id: "tpl_inquiry",
    name: "探究课",
    scope: "inquiry",
    blocks: [
      { type: "rich_text", title: "情境导入" },
      { type: "rich_text", title: "问题驱动" },
      { type: "rich_text", title: "小组探究" },
      { type: "rich_text", title: "成果展示" },
      { type: "rich_text", title: "归纳提升" },
    ],
  },
  {
    id: "tpl_blank",
    name: "空白模板",
    scope: "blank",
    blocks: [],
  },
];

export const LESSON_PLAN_STATUS_KEYS: Record<string, string> = {
  draft: "draft",
  published: "published",
  archived: "archived",
};

// @deprecated 使用 useTranslations("lessonPreparation").status.${key} 替代
export const LESSON_PLAN_STATUS_LABELS: Record<string, string> = LESSON_PLAN_STATUS_KEYS;