package controller

import (
	"net/http"

	"github.com/gin-gonic/gin"

	"nl-pms-api/internal/commonservice"
	"nl-pms-api/internal/service"
)

// FileController 文件上传/列表/删除。
type FileController struct {
	Svc *service.FileService
}

func (h *FileController) Upload(c *gin.Context) {
	fh, err := c.FormFile("file")
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "FILE_REQUIRED"})
		return
	}
	f, err := fh.Open()
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "FILE_READ_FAILED"})
		return
	}
	defer f.Close()
	out, err := h.Svc.Upload(
		commonservice.UserID(c),
		commonservice.ParseID(c.PostForm("teamId")),
		c.PostForm("kind"),
		fh.Filename,
		f,
		fh.Size,
		requestHost(c),
	)
	if err != nil {
		writeErr(c, err)
		return
	}
	c.JSON(http.StatusOK, out)
}

func (h *FileController) List(c *gin.Context) {
	total, items, err := h.Svc.List(
		commonservice.UserID(c),
		c.Query("scope"),
		commonservice.ParseID(c.Query("teamId")),
		commonservice.ParseID(c.Query("page")),
		commonservice.ParseID(c.Query("pageSize")),
		requestHost(c),
	)
	if err != nil {
		writeErr(c, err)
		return
	}
	c.JSON(http.StatusOK, gin.H{"total": total, "items": items})
}

func (h *FileController) Delete(c *gin.Context) {
	if err := h.Svc.Delete(commonservice.UserID(c), commonservice.ParseID(c.Param("id"))); err != nil {
		writeErr(c, err)
		return
	}
	c.JSON(http.StatusOK, gin.H{"ok": true})
}

func requestHost(c *gin.Context) string {
	scheme := "http"
	if c.Request.TLS != nil {
		scheme = "https"
	}
	return scheme + "://" + c.Request.Host
}