package controllers

import (
	"math"

	"strings"

	"strconv"

	"github.com/TruthHun/BookStack/conf"
	"github.com/TruthHun/BookStack/models"
	"github.com/TruthHun/BookStack/utils"
	"github.com/astaxie/beego"
)

type HomeController struct {
	BaseController
}

func (this *HomeController) Index() {
	//tab
	var (
		tab string
		cid int //分类,如果只是一级分类,则忽略,二级分类,则根据二级分类查找内容
		urlPrefix = beego.URLFor("HomeController.Index")
		cate models.Category
		lang = this.GetString("lang")
		tabName = map[string]string{"recommend": "站长推荐", "latest": "最新发布", "popular": "热门书籍"}
	)

	tab = strings.ToLower(this.GetString("tab"))
	switch tab {
	case "recommend", "popular", "latest":
	default:
		tab = "latest"
	}

	if cid, _ = this.GetInt("cid"); cid > 0 {
		ModelCate := new(models.Category)
		cate = ModelCate.Find(cid)
		this.Data["Cate"] = cate
	}

	this.Data["Cid"] = cid
	this.TplName = "home/index.html"
	this.Data["IsHome"] = true

	//如果没有开启匿名访问,则跳转到登录页面
	if !this.EnableAnonymous && this.Member == nil {
		this.Redirect(beego.URLFor("AccountController.Login"), 302)
	}

	pageIndex, _ := this.GetInt("page", 1)
	//每页显示24个,为了兼容Pad、mobile、PC
	pageSize := 24
	books, totalCount, err := models.NewBook().HomeData(pageIndex, pageSize, models.BookOrder(tab), lang, cid)
	if err != nil {
		beego.Error(err)
		this.Abort("404")
	}
	if totalCount > 0 {
		urlSuffix := "&tab=" + tab
		if cid > 0 {
			urlSuffix = urlSuffix + "&cid=" + strconv.Itoa(cid)
		}
		urlSuffix = urlSuffix + "&lang=" + lang
		html := utils.NewPaginations(conf.RollPage, totalCount, pageSize, pageIndex, urlPrefix, urlSuffix)
		this.Data["PageHtml"] = html
	} else {
		this.Data["PageHtml"] = ""
	}

	this.Data["TotalPages"] = int(math.Ceil(float64(totalCount) / float64(pageSize)))
	this.Data["Lists"] = books
	this.Data["Tab"] = tab
	this.Data["Lang"] = lang
	title := this.Sitename

	if cid > 0 {
		title = "[发现] " + cate.Title + " - " + tabName[tab] + " - " + title
	} else {
		title = "探索,发现新世界,畅想新知识 - " + this.Sitename
	}
	this.GetSeoByPage("index", map[string]string{
		"title": title,
		"keywords": "文档托管,在线创作,文档在线管理,在线知识管理,文档托管平台,在线写书,文档在线转换,在线编辑,在线阅读,开发手册,api手册,文档在线学习,技术文档,在线编辑",
		"description": this.Sitename + "专注于文档在线写作、协作、分享、阅读与托管,让每个人更方便地发布、分享和获得知识。",
	})
}