/*

 * tracker | MatterLinux Package Tracker
 * MatterLinux 2023-2024 (https://matterlinux.xyz)

 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.

 */

package main

import (
	"log"
	"strings"
	"time"

	"git.matterlinux.xyz/matter/tracker/lib"
	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/template/html/v2"
)

var lastupdate time.Time 
var updatetick = time.NewTicker(time.Hour)
var stopchan = make(chan struct{})

func UpdateLoop() {
  UpdatePackages()

  for {
    select {
      case <- updatetick.C:
        UpdatePackages()
      case <- stopchan:
        updatetick.Stop()
        return
    }
  }
}

func UpdatePackages() {
  lib.LoadAllPkgs()
  lastupdate = time.Now() 
}

func GETIndex(c *fiber.Ctx) error {
  repo := c.Query("r")
  name := c.Query("n")
  exact := c.Query("e")
  isjson := c.Query("j")
  
  if repo == "" && name == "" {
    if isjson == "1" {
      return c.JSON(lib.Packages)
    }
    return c.Render("index", fiber.Map{
      "last": lib.GetTimePassed(lastupdate),
      "repos": lib.Repos,
      "pkgs": lib.Packages,
    })
  }

  name = lib.CleanString(name) 
  var res []lib.Package

  for _, p := range lib.Packages {
    if(repo != "all" && p.Repo != repo){
      continue
    }

    if(exact == ""){
      if(strings.Contains(p.Name, name)){
        res = append(res, p)
      }
    }else {
      if (p.Name == name) {
        res = append(res, p)
      }
    }
  }

  if isjson == "1" {
    return c.JSON(res)
  }
  
  return c.Render("index", fiber.Map{
    "search": name,
    "last": lib.GetTimePassed(lastupdate),
    "repos": lib.Repos,
    "pkgs": res,
  })
}

func main(){
  log.SetFlags(log.Ltime | log.Lshortfile)

  engine := html.New("./templates", ".html")
  app := fiber.New(fiber.Config{
    DisableStartupMessage: true,
    Views: engine,
  })

  app.Static("/", "./public")
  app.Get("/", GETIndex)

  app.Get("*", func(c *fiber.Ctx) error {
    return lib.RenderError(c, 404)
  })

  go UpdateLoop()
  log.Println("Starting MatterLinux Package Tracker on port 9877")
  err := app.Listen(":9877")
  if err != nil {
    log.Printf("Error starting server: %s", err)
  }
  close(stopchan)
}