package tabulatorreq

import (
	"git.x2erp.com/qdy/go-base/model/request/queryreq"
)

// TabulatorSorter Tabulator排序器格式
type TabulatorSorter struct {
	Field string `json:"field"` // 排序字段
	Dir   string `json:"dir"`   // 排序方向: asc/desc
}

// TabulatorFilter Tabulator筛选器格式
type TabulatorFilter struct {
	Field string      `json:"field"` // 筛选字段
	Type  string      `json:"type"`  // 筛选类型: =, !=, like, >, <, in等
	Value interface{} `json:"value"` // 筛选值
}

// TabulatorRequest Tabulator原生请求格式
type TabulatorRequest struct {
	Page   int               `json:"page"`             // 当前页码（从1开始）
	Size   int               `json:"size"`             // 每页大小
	Sort   []TabulatorSorter `json:"sort,omitempty"`   // 排序器数组（单数，匹配前端）
	Filter []TabulatorFilter `json:"filter,omitempty"` // 筛选器数组（单数，匹配前端）
}

// Validate 验证请求参数
func (r *TabulatorRequest) Validate() {
	if r.Page < 1 {
		r.Page = 1
	}
	if r.Size <= 0 {
		r.Size = 10
	} else if r.Size > 1000 {
		r.Size = 1000
	}
}

// ToQueryRequest 转换为通用QueryRequest
func (r *TabulatorRequest) ToQueryRequest(fieldMapper func(string) string) *queryreq.QueryRequest {
	req := &queryreq.QueryRequest{
		Page:     r.Page - 1, // Tabulator从1开始，QueryRequest从0开始
		PageSize: r.Size,
	}

	// 转换排序器
	for _, sorter := range r.Sort {
		field := fieldMapper(sorter.Field)
		if field == "" {
			continue // 无效字段，跳过
		}
		req.Sort = append(req.Sort, queryreq.SortParam{
			Field: field,
			Order: sorter.Dir,
		})
	}

	// 转换筛选器
	for _, filter := range r.Filter {
		field := fieldMapper(filter.Field)
		if field == "" {
			continue // 无效字段，跳过
		}
		req.Filter = append(req.Filter, queryreq.FilterParam{
			Field:    field,
			Operator: mapOperator(filter.Type),
			Value:    filter.Value,
		})
	}

	return req
}

// mapOperator 映射Tabulator操作符到QueryRequest操作符
func mapOperator(tabulatorOp string) queryreq.Operator {
	switch tabulatorOp {
	case "=", "==":
		return queryreq.OpEquals
	case "!=", "<>":
		return queryreq.OpNotEquals
	case "like", "contains":
		return queryreq.OpLike
	case "in":
		return queryreq.OpIn
	case ">":
		return queryreq.OpGreaterThan
	case "<":
		return queryreq.OpLessThan
	case ">=":
		return queryreq.OpGreaterOrEq
	case "<=":
		return queryreq.OpLessOrEq
	default:
		return queryreq.OpEquals
	}
}