package service

import (
	"context"
	"encoding/json"
	"time"

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

type VersionService struct{ uc *biz.VersionUsecase }

func NewVersionService(uc *biz.VersionUsecase) *VersionService { return &VersionService{uc: uc} }
func versionDTO(v *biz.Version) map[string]any {
	return map[string]any{"ID": v.ID, "CreatedAt": v.CreatedAt, "UpdatedAt": v.UpdatedAt, "DeletedAt": nil, "versionName": v.Name, "versionCode": v.Code, "description": v.Description, "versionData": v.Data}
}
func (s *VersionService) Versions(ctx context.Context, page, size int, name, code string, createdAtRange []*time.Time) ([]map[string]any, int64, error) {
	items, total, err := s.uc.ListVersions(ctx, page, size, name, code, createdAtRange)
	if err != nil {
		return nil, 0, err
	}
	out := make([]map[string]any, 0, len(items))
	for _, v := range items {
		out = append(out, versionDTO(v))
	}
	return out, total, nil
}
func (s *VersionService) Version(ctx context.Context, id uint) (map[string]any, error) {
	v, err := s.uc.FindVersion(ctx, id)
	if err != nil {
		return nil, err
	}
	return versionDTO(v), nil
}
func (s *VersionService) VersionData(ctx context.Context, id uint) (string, string, error) {
	v, err := s.uc.FindVersion(ctx, id)
	if err != nil {
		return "", "", err
	}
	return v.Data, v.Code, nil
}
func (s *VersionService) DeleteVersions(ctx context.Context, ids []uint) error {
	return s.uc.DeleteVersions(ctx, ids)
}

func (s *VersionService) Export(ctx context.Context, name, code, description string, menuIDs, apiIDs, dictIDs []uint) error {
	bundle, err := s.uc.BuildVersionBundle(ctx, menuIDs, apiIDs, dictIDs)
	if err != nil {
		return err
	}
	bundle.Name = name
	bundle.Code = code
	bundle.Description = description
	bundle.ExportTime = time.Now().Format("2006-01-02 15:04:05")
	menus := make([]map[string]any, 0, len(bundle.Menus))
	for _, v := range bundle.Menus {
		menus = append(menus, convertMenu(v))
	}
	apis := make([]map[string]any, 0, len(bundle.APIs))
	for _, v := range bundle.APIs {
		apis = append(apis, apiDTO(v))
	}
	dicts := make([]map[string]any, 0, len(bundle.Dictionaries))
	for _, v := range bundle.Dictionaries {
		dicts = append(dicts, dictionaryDTO(v))
	}
	payload := map[string]any{"version": map[string]any{"name": name, "code": code, "description": description, "exportTime": bundle.ExportTime}, "menus": menus, "apis": apis, "dictionaries": dicts}
	raw, err := json.MarshalIndent(payload, "", "  ")
	if err != nil {
		return err
	}
	return s.uc.CreateVersion(ctx, &biz.Version{Name: name, Code: code, Description: description, Data: string(raw)})
}
func (s *VersionService) Import(ctx context.Context, bundle *biz.VersionBundle) error {
	return s.uc.ImportVersionBundle(ctx, bundle)
}
func versionMenuDomain(value dto.VersionMenuRequest) *biz.Menu {
	menu := &biz.Menu{Path: value.Path, Name: value.Name, Hidden: value.Hidden, Component: value.Component, Sort: value.Sort, ActiveName: value.Meta.ActiveName, KeepAlive: value.Meta.KeepAlive, DefaultMenu: value.Meta.DefaultMenu, Title: value.Meta.Title, Icon: value.Meta.Icon, CloseTab: value.Meta.CloseTab, TransitionType: value.Meta.TransitionType}
	for _, button := range value.MenuButtons {
		menu.Buttons = append(menu.Buttons, &biz.MenuButton{Name: button.Name, Description: button.Description})
	}
	for _, parameter := range value.Parameters {
		menu.Parameters = append(menu.Parameters, &biz.MenuParameter{Type: parameter.Type, Key: parameter.Key, Value: parameter.Value})
	}
	for _, child := range value.Children {
		menu.Children = append(menu.Children, versionMenuDomain(child))
	}
	return menu
}
func (s *VersionService) ImportRequest(ctx context.Context, req *dto.ImportVersionRequest) error {
	if req.Version.Name == "" || req.Version.Code == "" {
		return biz.ErrInvalidVersion
	}
	bundle := &biz.VersionBundle{Name: req.Version.Name, Code: req.Version.Code, Description: req.Version.Description, ExportTime: req.Version.ExportTime}
	for _, menu := range req.Menus {
		bundle.Menus = append(bundle.Menus, versionMenuDomain(menu))
	}
	for _, api := range req.APIs {
		bundle.APIs = append(bundle.APIs, &biz.API{Path: api.Path, Description: api.Description, APIGroup: api.APIGroup, Method: api.Method})
	}
	for _, dictionary := range req.Dictionaries {
		item := &biz.Dictionary{Name: dictionary.Name, Type: dictionary.Type, Status: dictionary.Status, Desc: dictionary.Description}
		for _, detail := range dictionary.Details {
			status := true
			if detail.Status != nil {
				status = *detail.Status
			}
			item.Details = append(item.Details, &biz.DictionaryDetail{Label: detail.Label, Value: detail.Value, Extend: detail.Extend, Status: status, Sort: detail.Sort, ParentID: detail.ParentID, Level: detail.Level, Path: detail.Path})
		}
		bundle.Dictionaries = append(bundle.Dictionaries, item)
	}
	if err := s.Import(ctx, bundle); err != nil {
		return err
	}
	raw, _ := json.Marshal(req)
	_ = s.uc.CreateVersion(ctx, &biz.Version{
		Name:        req.Version.Name,
		Code:        req.Version.Code + "_imported_" + time.Now().Format("20060102150405"),
		Description: "导入版本: " + req.Version.Description,
		Data:        string(raw),
	})
	return nil
}