package api

import (
	"context"
	"encoding/json"
	"strconv"

	"next-terminal/server/common"
	"next-terminal/server/common/maps"
	"next-terminal/server/dto"
	"next-terminal/server/model"
	"next-terminal/server/repository"
	"next-terminal/server/utils"

	"github.com/labstack/echo/v4"
)

type WebsiteApi struct{}

func (api WebsiteApi) AllEndpoint(c echo.Context) error {
	items, err := repository.WebsiteRepository.FindAll(context.TODO())
	if err != nil {
		return err
	}
	return Success(c, items)
}

func (api WebsiteApi) PagingEndpoint(c echo.Context) error {
	pageIndex, _ := strconv.Atoi(c.QueryParam("pageIndex"))
	pageSize, _ := strconv.Atoi(c.QueryParam("pageSize"))
	keyword := c.QueryParam("keyword")

	items, total, err := repository.WebsiteRepository.Find(context.TODO(), pageIndex, pageSize, keyword)
	if err != nil {
		return err
	}
	return Success(c, maps.Map{
		"total": total,
		"items": items,
	})
}

func serializeJSON(v interface{}) string {
	if v == nil {
		return ""
	}
	switch val := v.(type) {
	case string:
		return val
	case []interface{}, map[string]interface{}:
		bytes, err := json.Marshal(val)
		if err != nil {
			return ""
		}
		return string(bytes)
	default:
		bytes, err := json.Marshal(val)
		if err != nil {
			return ""
		}
		return string(bytes)
	}
}

func (api WebsiteApi) CreateEndpoint(c echo.Context) error {
	var req dto.WebsiteDTO
	if err := c.Bind(&req); err != nil {
		return err
	}

	item := &model.Website{
		ID:          utils.UUID(),
		Name:        req.Name,
		Enabled:     req.Enabled,
		TargetUrl:   req.TargetUrl,
		TargetHost:  req.TargetHost,
		TargetPort:  req.TargetPort,
		Domain:      req.Domain,
		AsciiDomain: req.AsciiDomain,
		Entrance:    req.Entrance,
		Description: req.Description,
		Status:      req.Status,
		StatusText:  req.StatusText,
		GatewayType: req.GatewayType,
		GatewayId:   req.GatewayId,
		BasicAuth:   serializeJSON(req.BasicAuth),
		Headers:     serializeJSON(req.Headers),
		Cert:        serializeJSON(req.Cert),
		Public:      serializeJSON(req.Public),
		TempAllow:   serializeJSON(req.TempAllow),
		GroupId:     req.GroupId,
		Sort:        req.Sort,
	}

	if err := repository.WebsiteRepository.Create(context.TODO(), item); err != nil {
		return err
	}
	return Success(c, "")
}

func (api WebsiteApi) UpdateEndpoint(c echo.Context) error {
	id := c.Param("id")
	var req dto.WebsiteDTO
	if err := c.Bind(&req); err != nil {
		return err
	}

	item := &model.Website{
		ID:          id,
		Name:        req.Name,
		Enabled:     req.Enabled,
		TargetUrl:   req.TargetUrl,
		TargetHost:  req.TargetHost,
		TargetPort:  req.TargetPort,
		Domain:      req.Domain,
		AsciiDomain: req.AsciiDomain,
		Entrance:    req.Entrance,
		Description: req.Description,
		Status:      req.Status,
		StatusText:  req.StatusText,
		GatewayType: req.GatewayType,
		GatewayId:   req.GatewayId,
		BasicAuth:   serializeJSON(req.BasicAuth),
		Headers:     serializeJSON(req.Headers),
		Cert:        serializeJSON(req.Cert),
		Public:      serializeJSON(req.Public),
		TempAllow:   serializeJSON(req.TempAllow),
		GroupId:     req.GroupId,
		Sort:        req.Sort,
	}

	if err := repository.WebsiteRepository.UpdateById(context.TODO(), item, id); err != nil {
		return err
	}
	return Success(c, nil)
}

func (api WebsiteApi) DeleteEndpoint(c echo.Context) error {
	id := c.Param("id")
	if err := repository.WebsiteRepository.DeleteById(context.TODO(), id); err != nil {
		return err
	}
	return Success(c, nil)
}

func (api WebsiteApi) GetEndpoint(c echo.Context) error {
	id := c.Param("id")
	item, err := repository.WebsiteRepository.FindById(context.TODO(), id)
	if err != nil {
		return err
	}
	return Success(c, item)
}

func (api WebsiteApi) GroupsGetEndpoint(c echo.Context) error {
	groups, err := repository.WebsiteGroupRepository.FindAll(context.TODO())
	if err != nil {
		return err
	}
	tree := buildWebsiteGroupTree(groups, "")
	return Success(c, tree)
}

func buildWebsiteGroupTree(groups []model.WebsiteGroup, parentId string) []maps.Map {
	var tree []maps.Map
	for _, g := range groups {
		if g.ParentId == parentId {
			node := maps.Map{
				"id":    g.ID,
				"name":  g.Name,
				"title": g.Name,
				"key":   "wgroup_" + g.ID,
				"value": g.ID,
			}
			children := buildWebsiteGroupTree(groups, g.ID)
			if len(children) > 0 {
				node["children"] = children
			}
			tree = append(tree, node)
		}
	}
	return tree
}

func (api WebsiteApi) GroupsSetEndpoint(c echo.Context) error {
	var req []map[string]interface{}
	if err := c.Bind(&req); err != nil {
		return err
	}
	ctx := context.TODO()
	_ = repository.WebsiteGroupRepository.DeleteAll(ctx)
	for i, item := range req {
		name := ""
		if v, ok := item["name"].(string); ok {
			name = v
		} else if v, ok := item["title"].(string); ok {
			name = v
		}
		group := model.WebsiteGroup{
			ID:       utils.UUID(),
			Name:     name,
			ParentId: "",
			Sort:     i,
			Created:  common.NowJsonTime(),
		}
		_ = repository.WebsiteGroupRepository.Create(ctx, &group)
		if subChildren, ok := item["children"].([]interface{}); ok {
			saveWebsiteGroupChildren(ctx, subChildren, group.ID)
		}
	}
	return Success(c, nil)
}

func saveWebsiteGroupChildren(ctx context.Context, children []interface{}, parentId string) {
	for i, child := range children {
		m, ok := child.(map[string]interface{})
		if !ok {
			continue
		}
		name := ""
		if v, ok := m["name"].(string); ok {
			name = v
		} else if v, ok := m["title"].(string); ok {
			name = v
		}
		group := model.WebsiteGroup{
			ID:       utils.UUID(),
			Name:     name,
			ParentId: parentId,
			Sort:     i,
			Created:  common.NowJsonTime(),
		}
		_ = repository.WebsiteGroupRepository.Create(ctx, &group)
		if subChildren, ok := m["children"].([]interface{}); ok {
			saveWebsiteGroupChildren(ctx, subChildren, group.ID)
		}
	}
}

func (api WebsiteApi) GroupsDeleteEndpoint(c echo.Context) error {
	id := c.Param("id")

	count, err := repository.WebsiteGroupRepository.CountByParentId(context.TODO(), id)
	if err != nil {
		return err
	}
	if count > 0 {
		return Fail(c, -1, "该分组下存在子分组，无法删除")
	}

	if err := repository.WebsiteGroupRepository.DeleteById(context.TODO(), id); err != nil {
		return err
	}
	return Success(c, nil)
}

func (api WebsiteApi) ChangeGroupEndpoint(c echo.Context) error {
	var req struct {
		WebsiteIds []string `json:"websiteIds"`
		GroupId    string   `json:"groupId"`
	}
	if err := c.Bind(&req); err != nil {
		return err
	}

	for _, websiteId := range req.WebsiteIds {
		website, err := repository.WebsiteRepository.FindById(context.TODO(), websiteId)
		if err != nil {
			continue
		}
		website.GroupId = req.GroupId
		_ = repository.WebsiteRepository.UpdateById(context.TODO(), &website, websiteId)
	}
	return Success(c, nil)
}

func (api WebsiteApi) ChangeGatewayEndpoint(c echo.Context) error {
	return Success(c, nil)
}

func (api WebsiteApi) SortEndpoint(c echo.Context) error {
	return Success(c, nil)
}

func (api WebsiteApi) FaviconEndpoint(c echo.Context) error {
	return Success(c, "")
}