package web

import (
	"net/http"
	"strconv"

	"goji.io/pat"

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

// to add a new blog post
func blogpostAdd(w http.ResponseWriter, r *http.Request) {
	logger := log.GetLog(r, "blogpostadd")
	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)
	var blogpost BlogPost
	returnerr = libapi.JSONDecoder(w, r, logger, &blogpost)
	if returnerr != nil {
		libapi.JSONWrite(w, r, false, returnerr)
		return
	}

	blogpost.BlogID = blog.ID

	if blogpost.Preview != nil {
		blogpost.PreviewID = data.JsonNullInt64{}
		blogpost.PreviewID.Scan(blogpost.Preview.ID)
		blogpost.Preview = nil
	}

	if err := dbconnection.Create(&blogpost).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)
}

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

	blogpost.BlogID = blog.ID
	blogpost.ID = blogpostid

	if blogpost.Preview != nil {
		blogpost.PreviewID = data.JsonNullInt64{}
		blogpost.PreviewID.Scan(blogpost.Preview.ID)
		blogpost.Preview = nil
	}

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

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

// to delete a blog post
func blogpostDelete(w http.ResponseWriter, r *http.Request) {
	logger := log.GetLog(r, "blogpostdelete")
	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)
	blogpostid, err := strconv.ParseInt(pat.Param(r, "blogpostid"), 10, 64)
	if err != nil {
		logger.Warn("invalid blogpostid, no integer")
		libapi.JSONWrite(w, r, false, &libapi.ErrorResult{Fields: []string{"blogid"}, Message: "Not a valid blogpostid"})
		return
	}
	logger = logger.WithField("pID", blogpostid)
	blogpost := &BlogPost{}
	dbconnection.Where("blog = ? and id = ?", blog.ID, blogpostid).First(blogpost)

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