import {
    bigint, // BIGINT (大整数, -2^63 到 2^63-1)
    bigserial, // BIGSERIAL (自增大整数, 1 到 2^63-1)
    boolean, // BOOLEAN (布尔值)
    char, // CHAR (定长字符串)
    check, // 定义检查约束
    date, // DATE (日期)
    decimal, // DECIMAL/NUMERIC (精确数字, 指定 precision 和 scale)
    doublePrecision, // DOUBLE PRECISION (双精度浮点数, 8字节)
    foreignKey, // 定义外键
    index, // 创建索引
    integer, // INTEGER (整数, -2^31 到 2^31-1)
    interval, // INTERVAL (时间间隔)
    json, // JSON (JSON 数据)
    jsonb, // JSONB (二进制 JSON, 推荐使用)
    numeric, // NUMERIC (同 decimal)
    pgEnum, // 定义枚举类型 (PostgreSQL ENUM)
    pgMaterializedView, // 创建物化视图
    pgPolicy, // 定义行级安全策略
    pgRole, // 定义角色
    pgSequence, // 创建序列
    pgTable, // 定义表
    pgTableCreator, // 创建自定义表名生成器的表定义函数
    pgView, // 创建视图
    primaryKey, // 定义主键
    serial, // SERIAL (自增整数, 1 到 2^31-1)
    text, // TEXT (变长字符串, 无长度限制)
    time, // TIME (时间)
    timestamp, // TIMESTAMP (日期时间, 无时区)
    unique, // 定义唯一约束
    uniqueIndex, // 创建唯一索引
    uuid, // UUID (通用唯一标识符)
    varchar, // VARCHAR (变长字符串, 指定长度)
} from "drizzle-orm/pg-core";

import { sql } from "drizzle-orm";

import { id, createdAt, updatedAt } from "../common";
import { user } from "./auth.db";

// Enums
export const difficultyEnum = pgEnum('difficulty', ['easy', 'medium', 'hard']);
export const levelTypeEnum = pgEnum('level_type', ['drag_drop', 'puzzle']);
export const progressStatusEnum = pgEnum('progress_status', ['not_started', 'in_progress', 'completed']);
export const rewardTypeEnum = pgEnum('reward_type', ['badge', 'points', 'certificate']);

// Tables
export const levels = pgTable("levels", {
    id,
    title: varchar("title", { length: 255 }).notNull(),
    description: text("description"),
    difficulty: difficultyEnum("difficulty").notNull(),
    type: levelTypeEnum("type").notNull(),
    content: jsonb("content"), // JSON data for puzzle/blocks
    order: integer("order").notNull(),
    createdAt,
    updatedAt,
});

export const userProgress = pgTable("user_progress", {
    id,
    userId: text("user_id").notNull().references(() => user.id, { onDelete: "cascade" }),
    levelId: integer("level_id").notNull().references(() => levels.id, { onDelete: "cascade" }),
    status: progressStatusEnum("status").notNull().default('not_started'),
    progress: integer("progress").notNull().default(0), // 0-100
    completedAt: timestamp("completed_at"),
    createdAt,
    updatedAt,
});

export const rewards = pgTable("rewards", {
    id,
    name: varchar("name", { length: 255 }).notNull(),
    type: rewardTypeEnum("type").notNull(),
    value: integer("value"), // e.g., points value
    description: text("description"),
    iconUrl: varchar("icon_url", { length: 255 }),
    createdAt,
    updatedAt,
});

export const userRewards = pgTable("user_rewards", {
    id,
    userId: text("user_id").notNull().references(() => user.id, { onDelete: "cascade" }),
    rewardId: integer("reward_id").notNull().references(() => rewards.id, { onDelete: "cascade" }),
    earnedAt: timestamp("earned_at").defaultNow().notNull(),
    createdAt,
    updatedAt,
});

export const parentChild = pgTable("parent_child", {
    id,
    parentId: text("parent_id").notNull().references(() => user.id, { onDelete: "cascade" }),
    childId: text("child_id").notNull().references(() => user.id, { onDelete: "cascade" }),
    createdAt,
    updatedAt,
});