package handlers

import (
	"platform/pkg/env"
	"platform/web/auth"
	"platform/web/core"
	g "platform/web/globals"
	s "platform/web/services"
	"strings"

	"github.com/gofiber/fiber/v2"
)

func NavArticle(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitOfficialClient()
	if err != nil {
		return err
	}

	list, err := s.Article.Nav()
	if err != nil {
		return err
	}

	return c.JSON(list)
}

func GetArticle(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitOfficialClient()
	if err != nil {
		return err
	}

	var req core.IdReq
	if err := g.Validator.ParseBody(c, &req); err != nil {
		return err
	}

	article, err := s.Article.GetPublic(req.Id)
	if err != nil {
		return err
	}

	return c.JSON(article)
}

func PageArticleByAdmin(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitAdmin(core.ScopeArticleRead)
	if err != nil {
		return err
	}

	var req s.PageArticleReq
	if err := g.Validator.ParseBody(c, &req); err != nil {
		return err
	}

	list, total, err := s.Article.Page(&req)
	if err != nil {
		return err
	}

	return c.JSON(core.PageResp{
		Total: int(total),
		Page:  req.GetPage(),
		Size:  req.GetSize(),
		List:  list,
	})
}

func GetArticleByAdmin(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitAdmin(core.ScopeArticleRead)
	if err != nil {
		return err
	}

	var req core.IdReq
	if err := g.Validator.ParseBody(c, &req); err != nil {
		return err
	}

	article, err := s.Article.GetByAdmin(req.Id)
	if err != nil {
		return err
	}

	return c.JSON(article)
}

func CreateArticle(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitAdmin(core.ScopeArticleWrite)
	if err != nil {
		return err
	}

	var req s.CreateArticleData
	if err := g.Validator.ParseBody(c, &req); err != nil {
		return err
	}

	return s.Article.Create(req)
}

func UpdateArticle(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitAdmin(core.ScopeArticleWrite)
	if err != nil {
		return err
	}

	var req s.UpdateArticleData
	if err := g.Validator.ParseBody(c, &req); err != nil {
		return err
	}

	return s.Article.Update(req)
}

func DeleteArticle(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitAdmin(core.ScopeArticleWrite)
	if err != nil {
		return err
	}

	var req core.IdReq
	if err := g.Validator.ParseBody(c, &req); err != nil {
		return err
	}

	return s.Article.Delete(req.Id)
}

func UploadArticleImage(c *fiber.Ctx) error {
	_, err := auth.GetAuthCtx(c).PermitAdmin(core.ScopeArticleWrite)
	if err != nil {
		return err
	}

	fileHeader, err := c.FormFile("file")
	if err != nil {
		return fiber.NewError(fiber.StatusBadRequest, "缺少上传文件 file")
	}

	result, err := s.Article.UploadImage(fileHeader, articleUploadBaseURL(c))
	if err != nil {
		return err
	}

	return c.JSON(result)
}

func articleUploadBaseURL(c *fiber.Ctx) string {
	if env.UploadPublicBaseURL != "" {
		return strings.TrimRight(env.UploadPublicBaseURL, "/")
	}

	scheme := c.Protocol()
	if forwardedProto := c.Get("X-Forwarded-Proto"); forwardedProto != "" {
		scheme = strings.TrimSpace(strings.Split(forwardedProto, ",")[0])
	}

	host := c.Get(fiber.HeaderHost)
	if forwardedHost := c.Get("X-Forwarded-Host"); forwardedHost != "" {
		host = strings.TrimSpace(strings.Split(forwardedHost, ",")[0])
	}

	if host == "" {
		return ""
	}
	return scheme + "://" + host
}