package app

import (
	"fmt"

	. "code.hoteas.com/golang/hotime/db"
)

// SetupDMDatabase 为达梦数据库创建测试表并灌入测试数据
func SetupDMDatabase(db *HoTimeDB) {
	if db.Type != "dm" && db.Type != "dameng" {
		return
	}

	fmt.Println("[DM Setup] 开始初始化达梦数据库测试环境...")

	prefix := db.GetPrefix()
	createDMTables(db, prefix)
	seedTestData(db, "DM")

	fmt.Println("[DM Setup] 达梦数据库测试环境初始化完成")
}

func dmTableExists(db *HoTimeDB, tableName string) bool {
	// COUNT(*) 即使表为空也会返回一行；若表不存在则报错返回空切片。
	// 相比 USER_TABLES，这里直接检测当前 schema 下表的可访问性，避免
	// 连接 schema（?schema=TEST）与 USER_TABLES（SYSDBA 自身 schema）错配。
	res := db.Query(`SELECT COUNT(*) as cnt FROM "` + tableName + `"`)
	return len(res) > 0
}

func createDMTables(db *HoTimeDB, prefix string) {
	// admin 表
	tbl := prefix + "admin"
	if !dmTableExists(db, tbl) {
		fmt.Println("[DM Setup] 创建表:", tbl)
		db.Exec(`CREATE TABLE "` + tbl + `" (
			"id" INT IDENTITY(1,1) PRIMARY KEY,
			"name" VARCHAR(100),
			"phone" VARCHAR(20),
			"state" INT DEFAULT 0,
			"password" VARCHAR(100),
			"role_id" INT DEFAULT 0,
			"title" VARCHAR(100),
			"create_time" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
			"modify_time" TIMESTAMP DEFAULT CURRENT_TIMESTAMP
		)`)
		db.Exec(`CREATE UNIQUE INDEX "uk_` + tbl + `_phone" ON "` + tbl + `" ("phone")`)
	}

	// ctg 分类表
	tbl = prefix + "ctg"
	if !dmTableExists(db, tbl) {
		fmt.Println("[DM Setup] 创建表:", tbl)
		db.Exec(`CREATE TABLE "` + tbl + `" (
			"id" INT IDENTITY(1,1) PRIMARY KEY,
			"name" VARCHAR(100),
			"state" INT DEFAULT 0,
			"create_time" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
			"modify_time" TIMESTAMP DEFAULT CURRENT_TIMESTAMP
		)`)
	}

	// article 文章表
	tbl = prefix + "article"
	if !dmTableExists(db, tbl) {
		fmt.Println("[DM Setup] 创建表:", tbl)
		db.Exec(`CREATE TABLE "` + tbl + `" (
			"id" INT IDENTITY(1,1) PRIMARY KEY,
			"title" VARCHAR(200),
			"author" VARCHAR(100),
			"content" CLOB,
			"state" INT DEFAULT 0,
			"click_num" INT DEFAULT 0,
			"sort" INT DEFAULT 0,
			"img" VARCHAR(500),
			"ctg_id" INT DEFAULT 0,
			"admin_id" INT DEFAULT 0,
			"create_time" TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
			"modify_time" TIMESTAMP DEFAULT CURRENT_TIMESTAMP
		)`)
	}

	// test_batch 测试批量表
	tbl = prefix + "test_batch"
	if !dmTableExists(db, tbl) {
		fmt.Println("[DM Setup] 创建表:", tbl)
		db.Exec(`CREATE TABLE "` + tbl + `" (
			"id" INT IDENTITY(1,1) PRIMARY KEY,
			"name" VARCHAR(100),
			"title" VARCHAR(200),
			"state" INT DEFAULT 0,
			"create_time" TIMESTAMP
		)`)
	}

	// cached 老版本缓存表（兼容模式测试需要）
	tbl = prefix + "cached"
	if !dmTableExists(db, tbl) {
		fmt.Println("[DM Setup] 创建表:", tbl)
		db.Exec(`CREATE TABLE "` + tbl + `" (
			"id" INT IDENTITY(1,1) PRIMARY KEY,
			"key" VARCHAR(64),
			"value" CLOB,
			"endtime" BIGINT,
			"time" BIGINT
		)`)
	}

	// hotime_cache 新版缓存表
	tbl = prefix + "hotime_cache"
	if !dmTableExists(db, tbl) {
		fmt.Println("[DM Setup] 创建表:", tbl)
		db.Exec(`CREATE TABLE "` + tbl + `" (
			"id" INT IDENTITY(1,1) PRIMARY KEY,
			"key" VARCHAR(64) NOT NULL,
			"value" TEXT,
			"end_time" TIMESTAMP,
			"state" INT DEFAULT 0,
			"create_time" TIMESTAMP,
			"modify_time" TIMESTAMP,
			CONSTRAINT "uk_` + tbl + `_key" UNIQUE ("key")
		)`)
		db.Exec(`CREATE INDEX "idx_` + tbl + `_end_time" ON "` + tbl + `" ("end_time")`)
	}
}