package api

import (
	"net/http"
	"strconv"
	"strings"

	"cockpit/internal/domain"

	"github.com/gin-gonic/gin"
)

func (h *Handler) CustomerList(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	size, _ := strconv.Atoi(c.DefaultQuery("size", "20"))
	if page < 1 {
		page = 1
	}
	if size < 1 || size > 200 {
		size = 20
	}
	keyword := strings.TrimSpace(c.Query("keyword"))

	q := h.db.Model(&domain.Customer{})
	if keyword != "" {
		q = q.Where("name LIKE ? OR code LIKE ?", "%"+keyword+"%", "%"+keyword+"%")
	}
	var total int64
	_ = q.Count(&total).Error
	var list []domain.Customer
	_ = q.Order("id DESC").Offset((page - 1) * size).Limit(size).Find(&list).Error

	c.JSON(http.StatusOK, domain.OK(gin.H{
		"list":  list,
		"total": total,
	}))
}

type customerReq struct {
	Name   string `json:"name" binding:"required"`
	Code   string `json:"code"`
	Remark string `json:"remark"`
}

func (h *Handler) CustomerCreate(c *gin.Context) {
	var req customerReq
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, domain.Fail("参数错误"))
		return
	}
	row := domain.Customer{Name: strings.TrimSpace(req.Name), Code: strings.TrimSpace(req.Code), Remark: req.Remark}
	if err := h.db.Create(&row).Error; err != nil {
		c.JSON(http.StatusBadRequest, domain.Fail("创建失败："+err.Error()))
		return
	}
	c.JSON(http.StatusOK, domain.OK(row))
}

func (h *Handler) CustomerUpdate(c *gin.Context) {
	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
	var req customerReq
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, domain.Fail("参数错误"))
		return
	}
	var row domain.Customer
	if err := h.db.Where("id = ?", id).First(&row).Error; err != nil {
		c.JSON(http.StatusNotFound, domain.Fail("不存在"))
		return
	}
	row.Name = strings.TrimSpace(req.Name)
	row.Code = strings.TrimSpace(req.Code)
	row.Remark = req.Remark
	if err := h.db.Save(&row).Error; err != nil {
		c.JSON(http.StatusBadRequest, domain.Fail("更新失败："+err.Error()))
		return
	}
	c.JSON(http.StatusOK, domain.OK(row))
}

func (h *Handler) CustomerDelete(c *gin.Context) {
	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
	if err := h.db.Delete(&domain.Customer{}, id).Error; err != nil {
		c.JSON(http.StatusBadRequest, domain.Fail("删除失败："+err.Error()))
		return
	}
	c.JSON(http.StatusOK, domain.OK(gin.H{}))
}