package web

import (
	"net/http"
	"strconv"

	"goji.io/pat"

	libapi "dev.sum7.eu/sum7/warehost/lib/api"
)

func getBlog(w http.ResponseWriter, r *http.Request) (blog Blog, returnerr *libapi.ErrorResult) {
	ctx := r.Context()
	id, err := strconv.ParseInt(pat.Param(r, "blogid"), 10, 64)
	if err != nil {
		returnerr = &libapi.ErrorResult{Message: "Internal Request Error"}
		w.WriteHeader(http.StatusBadRequest)
		return
	}

	blog = Blog{}
	dbconnection.Where(map[string]interface{}{"id": id, "website": ctx.Value("websiteid").(int64)}).Preload("URL").Preload("Posts").Find(&blog)

	if blog.ID <= 0 {
		returnerr = &libapi.ErrorResult{Fields: []string{"blog"}, Message: "not found"}
		w.WriteHeader(http.StatusNotFound)
	}
	return
}

// blogList give all blogs of a website
func blogList(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	logger := log.GetLog(r, "bloglist")
	var blogges []*Blog
	dbconnection.Where("website = ?", ctx.Value("websiteid").(int64)).Preload("URL").Find(&blogges)
	logger.Info("done")
	libapi.JSONWrite(w, r, blogges, nil)
}

func blogShow(w http.ResponseWriter, r *http.Request) {
	logger := log.GetLog(r, "blogshow")
	blog, returnerr := getBlog(w, r)
	if returnerr != nil {
		logger.Info("not found")
		libapi.JSONWrite(w, r, false, returnerr)
		return
	}
	logger = logger.WithField("bID", blog.ID)
	logger.Info("done")
	libapi.JSONWrite(w, r, blog, nil)
}

// BlogAdd to add a new blog
func blogAdd(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	logger := log.GetLog(r, "blogadd")
	var blog Blog
	returnerr := libapi.JSONDecoder(w, r, logger, &blog)
	if returnerr != nil {
		libapi.JSONWrite(w, r, false, returnerr)
		return
	}
	blog.WebsiteID = ctx.Value("websiteid").(int64)
	blog.URL = &URL{
		WebsiteID: ctx.Value("websiteid").(int64),
		Path:      FixPath(blog.URL.Path),
	}

	if err := dbconnection.Create(&blog).Error; err != nil {
		logger.Error("database: during create blog: ", err)
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Message: "Internal Database Error"})
		return
	}
	logger.Info("done")
	libapi.JSONWrite(w, r, true, nil)
}

// BlogEdit to edit blog
func blogEdit(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	logger := log.GetLog(r, "blogedit")
	var blog Blog
	blogid, err := strconv.ParseInt(pat.Param(r, "blogid"), 10, 64)
	if err != nil {
		logger.Warn("invalid blogid, no integer")
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Fields: []string{"blogid"}, Message: "Not a valid blogid"})
		return
	}
	logger = logger.WithField("id", blogid)
	returnerr := libapi.JSONDecoder(w, r, logger, &blog)
	if returnerr != nil {
		libapi.JSONWrite(w, r, false, returnerr)
		return
	}

	blog.ID = blogid
	blog.WebsiteID = ctx.Value("websiteid").(int64)
	blog.URL.WebsiteID = blog.WebsiteID
	blog.URL.Path = FixPath(blog.URL.Path)

	tx := dbconnection.Begin()
	if err := tx.Save(blog.URL).Error; err != nil {
		logger.Error("database: during save website url: ", err)
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Message: "Internal Database Error"})
		return
	}

	blog.URLID = blog.URL.ID
	blog.URL = nil

	if err := tx.Save(blog).Error; err != nil {
		logger.Error("database: during save website blog: ", err)
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Message: "Internal Database Error"})
		return
	}
	tx.Commit()

	logger.Info("done")
	libapi.JSONWrite(w, r, true, nil)
}

// BlogDelete to delete blog
func blogDelete(w http.ResponseWriter, r *http.Request) {
	logger := log.GetLog(r, "blogdelete")
	blogid, err := strconv.ParseInt(pat.Param(r, "blogid"), 10, 64)
	if err != nil {
		logger.Warn("invalid blogid, no integer")
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Fields: []string{"blogid"}, Message: "Not a valid blogid"})
		return
	}
	logger = logger.WithField("id", blogid)
	blog := &Blog{}
	dbconnection.Where("id = ?", blogid).Preload("URL").First(blog)

	if err := dbconnection.Unscoped().Delete(blog.URL).Error; err != nil {
		logger.Error("database: during delete website blog: ", err)
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Message: "Internal Database Error"})
		return
	}
	logger.Info("done")
	libapi.JSONWrite(w, r, true, nil)
}