package service

import (
	"fmt"
	"strconv"
	"strings"
	"time"

	"git.x2erp.com/qdy/go-base/ctx"
	"git.x2erp.com/qdy/go-base/logger"
	"git.x2erp.com/qdy/go-base/model/request"
	"git.x2erp.com/qdy/go-base/model/response"

	"git.x2erp.com/qdy/go-base/util"

	"git.x2erp.com/qdy/go-db/factory/database"
	"github.com/jmoiron/sqlx"
)

func QueryYamlConfigure(dbFactory *database.DBFactory, req request.QueryRequest, reqCtx *ctx.RequestContext) *response.QueryResult[map[string]interface{}] {
	return query(dbFactory.GetDB(), req, reqCtx)

}

// QueryYamlConfigure 执行带位置参数的查询
func query(db *sqlx.DB, req request.QueryRequest, reqCtx *ctx.RequestContext) *response.QueryResult[map[string]interface{}] {

	startTime := time.Now()

	// 安全检查
	if db == nil {
		return util.CreateErrorResult[map[string]interface{}]("database connection is nil", reqCtx)
	}

	sqlStr := `
		SELECT b.config_startup_detail_id, b.config_key, b.config_value 
		FROM config_startup a
		JOIN config_startup_detail b ON a.config_startup_id = b.config_startup_id 
		WHERE a.config_environment_id = $1
		  AND a.config_service_id = $2;`

	params := req.PositionalParams
	logger.DebugC(reqCtx, sqlStr)
	logger.DebugC(reqCtx, fmt.Sprintf("PositionalParams: %v", params))

	// 执行查询
	rows, err := db.Queryx(sqlStr, params...)
	if err != nil {
		return util.CreateErrorResult[map[string]interface{}](fmt.Sprintf("Query execution failed: %v", err), reqCtx)
	}
	defer rows.Close()

	// 处理结果集
	return processQueryResult(rows, startTime, reqCtx)
}

func processQueryResult(rows *sqlx.Rows, startTime time.Time, reqCtx *ctx.RequestContext) *response.QueryResult[map[string]interface{}] {
	// 初始化结果结构体
	result := &response.QueryResult[map[string]interface{}]{
		Metadata: reqCtx,
	}

	// 获取列信息
	columns, err := rows.Columns()
	if err != nil {
		return util.CreateErrorResult[map[string]interface{}](fmt.Sprintf("Failed to get columns: %v", err), reqCtx)
	}

	// 存储最终结果：根key -> 内层配置map
	results := make(map[string]interface{})
	count := 0

	// 记录已经出现的内层key，用于检测重复
	// outerKey -> innerKey -> rowNumber
	//keyTracker := make(map[string]map[string]int)

	// 遍历行数据
	for rows.Next() {
		count++
		values := make([]interface{}, len(columns))
		valuePtrs := make([]interface{}, len(columns))
		for i := range columns {
			valuePtrs[i] = &values[i]
		}

		// 扫描行数据
		if err := rows.Scan(valuePtrs...); err != nil {
			return util.CreateErrorResult[map[string]interface{}](fmt.Sprintf("Scan row %d failed: %v", count, err), reqCtx)
		}

		// 提取当前行的三个核心字段
		var detailID, configKey string
		var configValue interface{}
		for i, col := range columns {
			v := values[i]
			if v == nil {
				continue
			}

			switch col {
			case "config_startup_detail_id":
				detailID = toString(v) // detailID 需要字符串
			case "config_key":
				configKey = toString(v) // config_key 需要字符串
			case "config_value":
				configValue = convertValue(v) // config_value 需要带类型转换
			}
		}

		//logger.DebugC(reqCtx, fmt.Sprintf("Row %d - detailID: %s, configKey: %s", count, detailID, configKey))

		// 解析 detailID 获取根key（倒数第3段）
		parts := strings.Split(detailID, ".")
		if len(parts) < 3 {
			return util.CreateErrorResult[map[string]interface{}](fmt.Sprintf("Row %d detailID format error: %s", count, detailID), reqCtx)
		}

		rootKey := parts[len(parts)-3] // 取倒数第3段，例如 "database"

		// 获取或创建外层key对应的map
		configMap, exists := results[rootKey]
		if !exists {
			// 不存在则创建
			configMap = make(map[string]interface{})
			results[rootKey] = configMap
		}

		// 添加或覆盖内层配置
		configMap.(map[string]interface{})[configKey] = configValue
	}

	// 检查行遍历错误
	if err := rows.Err(); err != nil {
		return util.CreateErrorResult[map[string]interface{}](fmt.Sprintf("Row iteration error: %v", err), reqCtx)
	}

	// 构建成功结果
	result.Success = true
	result.Data = results
	result.Count = count
	result.Time = time.Since(startTime).String()
	result.Message = "Query success"

	return result
}

// 辅助函数：转换为字符串
func toString(v interface{}) string {
	switch val := v.(type) {
	case string:
		return val
	case []byte:
		return string(val)
	case int64:
		return strconv.FormatInt(val, 10)
	case int32:
		return strconv.FormatInt(int64(val), 10)
	case int:
		return strconv.Itoa(val)
	case float64:
		return strconv.FormatFloat(val, 'f', -1, 64)
	case float32:
		return strconv.FormatFloat(float64(val), 'f', -1, 32)
	case bool:
		return strconv.FormatBool(val)
	default:
		return fmt.Sprintf("%v", val)
	}
}

// 辅助函数：转换值，保持合适的数据类型
func convertValue(v interface{}) interface{} {
	switch val := v.(type) {
	case []byte:
		// 尝试解析为合适的数据类型
		strVal := string(val)
		return parseStringValue(strVal)

	case string:
		return parseStringValue(val)

	case int64, int32, int:
		return val

	case float64, float32:
		return val

	case bool:
		return val

	default:
		// 其他类型转换为字符串
		return toString(val)
	}
}

// 辅助函数：解析字符串值为合适的数据类型
func parseStringValue(strVal string) interface{} {
	// 1. 尝试布尔值 (支持 true/false, yes/no, on/off, 1/0)
	lowerVal := strings.ToLower(strings.TrimSpace(strVal))
	if lowerVal == "true" || lowerVal == "yes" || lowerVal == "on" || lowerVal == "1" {
		return true
	}
	if lowerVal == "false" || lowerVal == "no" || lowerVal == "off" || lowerVal == "0" {
		return false
	}

	// 2. 尝试整数
	if intVal, err := strconv.ParseInt(strVal, 10, 64); err == nil {
		return intVal
	}

	// 3. 尝试浮点数
	if floatVal, err := strconv.ParseFloat(strVal, 64); err == nil {
		return floatVal
	}

	// 4. 保持为字符串
	return strVal
}