package agent

import (
	"context"
	"encoding/json"
	"strings"

	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/library/exportcenter"
	"git.5iot.com/iotlcm-public/iotlcm-admin-svr/internal/model"

	"github.com/gogf/gf/v2/errors/gerror"
)

// agentExportColumns 只允许列表字段，列标题和映射由服务端确定。
func agentExportColumns(raw string, defaults []model.ExportColumn) ([]model.ExportColumn, error) {
	if strings.TrimSpace(raw) == "" {
		return nil, gerror.New("请选择导出列")
	}
	var requested []model.ExportColumn
	if err := json.Unmarshal([]byte(raw), &requested); err != nil {
		return nil, gerror.New("导出列格式错误")
	}
	allowed := make(map[string]model.ExportColumn, len(defaults))
	for _, col := range defaults {
		allowed[col.Field] = col
	}
	result := make([]model.ExportColumn, 0, len(requested))
	seen := make(map[string]bool)
	for _, col := range requested {
		safe, ok := allowed[col.Field]
		if !ok {
			return nil, gerror.New("包含不允许导出的字段")
		}
		if !seen[col.Field] {
			result = append(result, safe)
			seen[col.Field] = true
		}
	}
	if len(result) == 0 {
		return nil, gerror.New("请选择导出列")
	}
	return result, nil
}

func (s *sAgentUser) UserExport(ctx context.Context, in *model.AgentUserListParam) error {
	columns, err := agentExportColumns(in.ExportColumnsJson, []model.ExportColumn{
		{Field: "userName", Label: "用户名称"}, {Field: "nickName", Label: "用户昵称"},
		{Field: "roles", Label: "角色"}, {Field: "phonenumber", Label: "联系电话"},
		{Field: "email", Label: "邮箱"}, {Field: "status", Label: "状态"}, {Field: "createdAt", Label: "创建时间"},
	})
	if err != nil {
		return err
	}
	_, err = exportcenter.Submit(ctx, &exportcenter.Request{
		BizKey: "agentUser", BizName: "用户管理", PermCode: "cpm:agent:user:export", QueryParam: in, Columns: columns,
		RowFields: agentExportFields(columns),
		ToRow: func(value interface{}) []interface{} {
			row := value.(map[string]interface{})
			values := make([]interface{}, 0, len(columns))
			for _, column := range columns {
				values = append(values, row[column.Field])
			}
			return values
		},
		Tags: func() ([]string, error) {
			labels := make([]string, 0, len(columns))
			for _, col := range columns {
				labels = append(labels, col.Label)
			}
			return labels, nil
		},
		Fetch: func(ctx context.Context, page, pageSize int) ([]interface{}, int, error) {
			query := *in
			query.Page = page
			query.PageSize = pageSize
			list, total, err := s.UserList(ctx, &query)
			if err != nil {
				return nil, 0, err
			}
			rows := make([]interface{}, 0, len(list))
			for _, item := range list {
				roles := make([]string, 0, len(item.Roles))
				for _, role := range item.Roles {
					if role != nil && role.RoleName != "" {
						roles = append(roles, role.RoleName)
					}
				}
				roleNames := strings.Join(roles, "、")
				if roleNames == "" {
					roleNames = "-"
				}
				createdAt := ""
				if item.CreatedAt != nil {
					createdAt = item.CreatedAt.Format("Y-m-d H:i:s")
				}
				rows = append(rows, map[string]interface{}{"userName": item.UserName, "nickName": item.NickName, "roles": roleNames, "phonenumber": item.Phonenumber, "email": item.Email, "status": agentExportStatus(item.Status), "createdAt": createdAt})
			}
			return rows, total, nil
		},
	})
	return err
}

func (s *sAgentDept) DeptExport(ctx context.Context, in *model.AgentDeptListParam) error {
	columns, err := agentExportColumns(in.ExportColumnsJson, []model.ExportColumn{
		{Field: "deptName", Label: "企业名称"}, {Field: "userName", Label: "登录账号"}, {Field: "nickName", Label: "负责人"},
		{Field: "phone", Label: "联系电话"}, {Field: "email", Label: "联系人邮箱"}, {Field: "areaCode", Label: "组织所在地"},
		{Field: "address", Label: "详细地址"}, {Field: "createdAt", Label: "创建时间"}, {Field: "status", Label: "状态"},
	})
	if err != nil {
		return err
	}
	_, err = exportcenter.Submit(ctx, &exportcenter.Request{
		BizKey: "agentDept", BizName: "企业客户", PermCode: "cpm:agent:dept:export", QueryParam: in, Columns: columns,
		RowFields: agentExportFields(columns),
		ToRow: func(value interface{}) []interface{} {
			row := value.(map[string]interface{})
			values := make([]interface{}, 0, len(columns))
			for _, column := range columns {
				values = append(values, row[column.Field])
			}
			return values
		},
		Tags: func() ([]string, error) {
			labels := make([]string, 0, len(columns))
			for _, col := range columns {
				labels = append(labels, col.Label)
			}
			return labels, nil
		},
		Fetch: func(ctx context.Context, page, pageSize int) ([]interface{}, int, error) {
			query := *in
			query.Page = page
			query.PageSize = pageSize
			list, total, err := s.DeptList(ctx, &query)
			if err != nil {
				return nil, 0, err
			}
			rows := make([]interface{}, 0, len(list))
			for _, item := range list {
				createdAt := ""
				if item.CreatedAt != nil {
					createdAt = item.CreatedAt.Format("Y-m-d H:i:s")
				}
				rows = append(rows, map[string]interface{}{"deptName": item.DeptName, "userName": item.UserName, "nickName": item.NickName, "phone": item.Phone, "email": item.Email, "areaCode": item.AreaCode, "address": item.Address, "createdAt": createdAt, "status": agentExportStatus(item.Status)})
			}
			return rows, total, nil
		},
	})
	return err
}

func agentExportFields(columns []model.ExportColumn) []string {
	fields := make([]string, 0, len(columns))
	for _, column := range columns {
		fields = append(fields, column.Field)
	}
	return fields
}

func agentExportStatus(status string) string {
	if status == "0" {
		return "正常"
	}
	if status == "1" {
		return "停用"
	}
	return "未知"
}