package service

import (
	"errors"
	"strings"

	"github.com/sirupsen/logrus"
	"myschools.me/heritage/heritage-api/model"
	"myschools.me/heritage/heritage-api/mysql"
)

var ErrNotFound = errors.New("not found")

// OrgCreateRequest 创建组织请求结构
type OrgCreateRequest struct {
	ParentID          string `json:"parentId"`
	Name              string `json:"name"`
	Enabled           *bool  `json:"enabled"`
	Sort              *int   `json:"sort"`
	Remark            string `json:"remark"`
	ProtectionLevel   string `json:"protectionLevel"`
	ProtectionType    string `json:"protectionType"`
	AnnouncementBatch string `json:"announcementBatch"`
	AdminRegion       string `json:"adminRegion"`
	CurrentOrg        string `json:"currentOrg"`
	CurrentUser       string `json:"currentUser"`
	Introduction      string `json:"introduction"`
}

// OrgUpdateRequest 更新组织请求结构
type OrgUpdateRequest struct {
	ParentID          *string `json:"parentId"`
	Name              *string `json:"name"`
	Enabled           *bool   `json:"enabled"`
	Sort              *int    `json:"sort"`
	Remark            *string `json:"remark"`
	ProtectionLevel   *string `json:"protectionLevel"`
	ProtectionType    *string `json:"protectionType"`
	AnnouncementBatch *string `json:"announcementBatch"`
	AdminRegion       *string `json:"adminRegion"`
	CurrentOrg        *string `json:"currentOrg"`
	CurrentUser       *string `json:"currentUser"`
	Introduction      *string `json:"introduction"`
}

// OrgResponse 组织响应结构
type OrgResponse struct {
	Org *model.Org `json:"org"`
}

// OrgListResponse 组织列表响应结构
type OrgListResponse struct {
	Items []model.Org `json:"items"`
	Total int64       `json:"total"`
	Page  int         `json:"page"`
	Size  int         `json:"size"`
}

func OrgCreate(req OrgCreateRequest) (*model.Org, error) {
	name := strings.TrimSpace(req.Name)
	if name == "" {
		return nil, errors.New("name required")
	}

	o := &model.Org{
		ID:                newID(),
		ParentID:          strings.TrimSpace(req.ParentID),
		Name:              name,
		Remark:            strings.TrimSpace(req.Remark),
		ProtectionLevel:   strings.TrimSpace(req.ProtectionLevel),
		ProtectionType:    strings.TrimSpace(req.ProtectionType),
		AnnouncementBatch: strings.TrimSpace(req.AnnouncementBatch),
		AdminRegion:       strings.TrimSpace(req.AdminRegion),
		Introduction:      strings.TrimSpace(req.Introduction),
	}
	if err := mysql.OrgCreate(o); err != nil {
		logrus.WithFields(logrus.Fields{
			"func": "OrgCreate",
		}).Warnf("mysql.OrgCreate: %v", err)
		return nil, err
	}
	return o, nil
}

func OrgUpdate(idv string, req OrgUpdateRequest) (*model.Org, error) {
	oid := strings.TrimSpace(idv)
	if oid == "" {
		return nil, ErrNotFound
	}
	existing, found, err := mysql.OrgByID(&oid)
	if err != nil {
		logrus.WithFields(logrus.Fields{
			"func": "OrgUpdate",
		}).Warnf("mysql.OrgByID: %v", err)
		return nil, err
	}
	if !found || existing == nil {
		logrus.WithFields(logrus.Fields{
			"func": "OrgUpdate",
		}).Warnf("mysql.OrgByID: not found")
		return nil, ErrNotFound
	}
	if req.ParentID != nil {
		existing.ParentID = strings.TrimSpace(*req.ParentID)
	}
	if req.Name != nil {
		n := strings.TrimSpace(*req.Name)
		if n == "" {
			return nil, errors.New("name required")
		}
		existing.Name = n
	}
	if req.Remark != nil {
		existing.Remark = strings.TrimSpace(*req.Remark)
	}
	if req.ProtectionLevel != nil {
		existing.ProtectionLevel = strings.TrimSpace(*req.ProtectionLevel)
	}
	if req.ProtectionType != nil {
		existing.ProtectionType = strings.TrimSpace(*req.ProtectionType)
	}
	if req.AnnouncementBatch != nil {
		existing.AnnouncementBatch = strings.TrimSpace(*req.AnnouncementBatch)
	}
	if req.AdminRegion != nil {
		existing.AdminRegion = strings.TrimSpace(*req.AdminRegion)
	}
	if req.Introduction != nil {
		existing.Introduction = strings.TrimSpace(*req.Introduction)
	}
	if err := mysql.OrgUpdate(existing); err != nil {
		logrus.WithFields(logrus.Fields{
			"func": "OrgUpdate",
		}).Warnf("mysql.OrgUpdate: %v", err)
		return nil, err
	}
	return existing, nil
}

func OrgDelete(idv string) error {
	oid := strings.TrimSpace(idv)
	if oid == "" {
		return ErrNotFound
	}
	ok, err := mysql.OrgDelete(&oid)
	if err != nil {
		logrus.WithFields(logrus.Fields{
			"func": "OrgDelete",
		}).Warnf("mysql.OrgDelete: %v", err)
		return err
	}
	if !ok {
		logrus.WithFields(logrus.Fields{
			"func": "OrgDelete",
		}).Warnf("mysql.OrgDelete: not found")
		return ErrNotFound
	}
	return nil
}

func OrgDetail(idv string) (*model.Org, error) {
	oid := strings.TrimSpace(idv)
	if oid == "" {
		return nil, ErrNotFound
	}
	o, found, err := mysql.OrgByID(&oid)
	if err != nil {
		logrus.WithFields(logrus.Fields{
			"func": "OrgDetail",
		}).Warnf("mysql.OrgByID: %v", err)
		return nil, err
	}
	if !found || o == nil {
		logrus.WithFields(logrus.Fields{
			"func": "OrgDetail",
		}).Warnf("mysql.OrgByID: not found")
		return nil, ErrNotFound
	}
	return o, nil
}

func OrgPage(parentID *string, page, size int) ([]model.Org, int64, error) {
	if page < 1 {
		page = 1
	}
	if size < 1 {
		size = 20
	}
	if size > 200 {
		size = 200
	}
	offset := (page - 1) * size
	return mysql.OrgList(parentID, &offset, &size)
}