package service

import (
	"context"
	"strings"

	"kra/internal/biz"
	"kra/internal/service/dto"
)

type DatabaseInit struct {
	DBType        string `json:"dbType"`
	Host          string `json:"host"`
	Port          string `json:"port"`
	UserName      string `json:"userName"`
	Password      string `json:"password"`
	DBName        string `json:"dbName" binding:"required"`
	DBPath        string `json:"dbPath"`
	Template      string `json:"template"`
	AdminPassword string `json:"adminPassword" binding:"required"`
}

func (s *SystemConfigService) Initialize(ctx context.Context, input *DatabaseInit, apis []*biz.API) error {
	driver, config := input.DBType, ""
	switch driver {
	case "mysql":
		config = "charset=utf8mb4&parseTime=True&loc=Local"
	case "pgsql":
		config = "sslmode=disable TimeZone=Asia/Shanghai"
	case "sqlite", "mssql":
	default:
		// The compatible initialization flow treats an omitted or unknown dbType as MySQL during
		// initialization rather than rejecting it as an unsupported driver.
		driver = "mysql"
		config = "charset=utf8mb4&parseTime=True&loc=Local"
	}
	return s.uc.Initialize(ctx, &biz.DatabaseConfig{Driver: driver, Host: input.Host, Port: input.Port, User: input.UserName, Password: input.Password, Name: input.DBName, Path: input.DBPath, Config: config, Template: input.Template, AdminPassword: input.AdminPassword, APIs: apis})
}

func (s *SystemConfigService) InitializeRoutes(ctx context.Context, input *DatabaseInit, routes []dto.Route) error {
	apis := make([]*biz.API, 0, len(routes))
	for _, route := range routes {
		path := route.Path
		if routerPrefix := s.settings.RouterPrefix(); routerPrefix != "" {
			path = strings.TrimPrefix(path, strings.TrimSuffix(routerPrefix, "/"))
			if path == "" {
				path = "/"
			}
		}
		group, description := routeMetadata(route.Method, path)
		apis = append(apis, &biz.API{Path: path, Method: route.Method, APIGroup: group, Description: description})
	}
	return s.Initialize(ctx, input, apis)
}

func routeGroup(path string) string {
	parts := strings.Split(strings.Trim(path, "/"), "/")
	if len(parts) > 0 && parts[0] != "" {
		return parts[0]
	}
	return "base"
}