package service

import (
	"fmt"
	"github.com/xuri/excelize/v2"
	"gorm.io/gorm"
	"insure/dto/request"
	"insure/dto/request/manage"
	"insure/global"
	"insure/model"
	"insure/utils/excel"
	"time"
)

var StudentInsureService = studentInsureService{}

type studentInsureService struct {
}

func (s *studentInsureService) Save(r request.StudentInsureInfoRequest) (*model.StudentInsureInfo, error) {
	info := model.StudentInsureInfo{}
	info.SchoolName = r.SchoolName
	info.StudentName = r.StudentName
	info.StudentIdentityNo = r.StudentIdentityNo
	info.StudentIdentityType = r.StudentIdentityType
	info.College = r.College
	info.Speciality = r.Speciality
	info.Class = r.Class
	info.Relation = r.Relation
	info.ParentName = r.ParentName
	info.ParentIdentityNo = r.ParentIdentityNo
	info.ParentIdentityType = r.ParentIdentityType
	info.ParentMobile = r.ParentMobile
	err := global.DB.Save(&info).Error
	if err != nil {
		return nil, err
	}
	return &info, nil
}

func (s *studentInsureService) GetInfos(req manage.StudentInsureInfoQueryRequest) ([]model.StudentInsureInfo, int64) {
	records := make([]model.StudentInsureInfo, req.PageSize)
	offset := (req.Page - 1) * req.PageSize
	var total int64
	s.buildQuery(req).Order("id desc").Offset(offset).Limit(req.PageSize).Find(&records)
	s.buildQuery(req).Model(&model.Order{}).Count(&total)
	return records, total
}
func (s *studentInsureService) buildQuery(req manage.StudentInsureInfoQueryRequest) *gorm.DB {
	tx := global.DB
	if req.SchoolName != "" {
		tx = tx.Where("school_name", req.SchoolName)
	}
	if req.StudentName != "" {
		tx = tx.Where("student_name", req.StudentName)
	}
	if req.StudentIdentityNo != "" {
		tx = tx.Where("student_identity_no", req.StudentIdentityNo)
	}
	if req.ParentName != "" {
		tx = tx.Where("parent_name", req.ParentName)
	}
	if req.ParentIdentityNo != "" {
		tx = tx.Where("parent_identity_no", req.ParentIdentityNo)
	}
	if req.ParentMobile != "" {
		tx = tx.Where("parent_mobile", req.ParentMobile)
	}
	if req.College != "" {
		tx = tx.Where("college", req.College)
	}
	if req.Speciality != "" {
		tx = tx.Where("speciality", req.Speciality)
	}
	if req.Class != "" {
		tx = tx.Where("class", req.Class)
	}
	if req.UpdatedAtStart != "" && req.UpdatedAtEnd != "" {
		updatedAtStart := req.UpdatedAtStart + " 00:00:00"
		updatedAtEnd := req.UpdatedAtEnd + " 23:59:59"
		tx = tx.Where("updated_at >= ?", updatedAtStart).Where("updated_at <= ?", updatedAtEnd)
	}
	return tx
}

func (s *studentInsureService) GenerateInfosExcel(req manage.StudentInsureInfoQueryRequest) *excelize.File {
	pageSize := 200
	lastID := 0

	f := excel.NewFile()
	headers := []string{
		"学校名称",
		"学生姓名",
		"学生证件号",
		"学生证件类型",
		"学院",
		"专业",
		"班级",
		"家长与学生关系",
		"家长姓名",
		"家长证件号",
		"家长证件类型",
		"家长电话",
		"提交时间",
	}
	excel.SetSimpleHeaders(headers, "Sheet1", f)

	var allRecords []model.StudentInsureInfo
	for {
		records := make([]model.StudentInsureInfo, pageSize)
		s.buildQuery(req).
			Where("id > ?", lastID).
			Order("id asc").
			Limit(pageSize).
			Find(&records)
		count := len(records)
		if count == 0 {
			break
		}
		lastIndex := count - 1
		lastID = records[lastIndex].ID
		fmt.Println("lastID", lastID)
		allRecords = append(allRecords, records...)
	}

	s.buildOrdersExcel(allRecords, "Sheet1", f)

	return f
}

func (studentInsureService) buildOrdersExcel(records []model.StudentInsureInfo, sheet string, f *excelize.File) {
	row := 2
	for _, record := range records {
		col := 0
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.SchoolName)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.StudentName)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.StudentIdentityNo)
		f.SetCellValue(sheet, excel.CellKey(row, &col), "身份证")
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.College)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.Speciality)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.Class)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.Relation)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.ParentName)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.ParentIdentityNo)
		f.SetCellValue(sheet, excel.CellKey(row, &col), "身份证")
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.ParentMobile)
		f.SetCellValue(sheet, excel.CellKey(row, &col), record.UpdatedAt.Format(time.DateTime))
		row++
	}
}