package handlers

import (
	"database/sql"
	"html/template"
	"log"
	"net/http"

	"paterissa.net/mblog/internal/models"
)

type blogContext struct {
	err		*log.Logger
	db		*sql.DB

	Rows	[]models.Post
	Name	string
}

func (ctx *blogContext) index(w http.ResponseWriter, r *http.Request) {
	ctx.Rows = []models.Post{}

	if r.URL.Path != "/" {
		http.NotFound(w, r)
		return
	}

	offset := r.URL.Query().Get("offset")
	if offset == "" {
		offset = "20"
	}

	rows, err := ctx.db.Query("SELECT * FROM posts WHERE id < " + offset + " ORDER BY id DESC LIMIT 20;")
	if err != nil {
		ctx.err.Print(err.Error())
		http.Error(w, "Internal Server Error", 500)
		return
	}
	defer rows.Close()

	for rows.Next() {
		var p models.Post

		if err = rows.Scan(&p.Id, &p.Name, &p.Time, &p.Content); err != nil {
			ctx.err.Print(err.Error())
			http.Error(w, "Internal Server Error", 500)
			return
		}

		ctx.Rows = append(ctx.Rows, p)
	}

	files := []string{
		"ui/html/base.tmpl.html",
		"ui/html/music_player.tmpl.html",
		"ui/html/pages/index.tmpl.html",
	}

	compiled, err := template.ParseFiles(files...)
	if err != nil {
		ctx.err.Print(err.Error())
		http.Error(w, "Internal Server Error", 500)
		return
	}

	err = compiled.ExecuteTemplate(w, "base", ctx)
	if err != nil {
		ctx.err.Print(err.Error())
		http.Error(w, "Internal Server Error", 500)
		return
	}
}