package main

import (
	"fmt"
	"net/http"
	"os"
	"strings"

	"go.wit.com/log"
)

// remove '?' part and trailing '/'
func cleanURL(url string) string {
	url = "/" + strings.Trim(url, "/")
	return url
}

func okHandler(w http.ResponseWriter, r *http.Request) {
	var route string
	route = cleanURL(r.URL.Path)
	log.HttpMode(w)
	defer log.HttpMode(nil)

	if route == "/help" {
		log.Info("uptime/                                 uptime uptime fun!")
		log.Info("list/                                   list modified repos")
		log.Info("list?readonly=true                      shows every repo")
		log.Info("gitpull/                                run a git pull in each repo")

		log.Info("")
		log.Info("Examples:")
		log.Info("")
		log.Info("not done yet:")

		log.Info("changes/                                show latest changes")
		log.Info("repo?repo=go.wit.com/apps/autotypist    show this repo")
		log.Info("clone?repo=go.wit.com/apps/virtigo      go-clone a new repo")
		log.Info("build?repo=go.wit.com/apps/autotypist   build the autotypist")
		log.Info("debian?repo=go.wit.com/apps/autotypist  make a debian package of the autotypist")
		return
	}

	if route == "/uptime" {
		s := "uptime uptime uptime fun!"
		log.Info(s)
		return
	}

	if route == "/list" {
		readonly := r.URL.Query().Get("readonly")
		onlydirty := r.URL.Query().Get("onlydirty")
		perfect := r.URL.Query().Get("perfect")
		var count int

		loop := me.repos.View.ReposSortByName()
		for loop.Scan() {
			repo := loop.Repo()

			count += 1
			header := repo.StandardHeader()
			if onlydirty == "true" {
				if repo.CheckDirty() {
					log.Info(header + "")
				}
				continue
			}

			if repo.ReadOnly() {
				if readonly == "true" {
					log.Info(header + "readonly")
				}
				continue
			}
			if repo.State() == "PERFECT" {
				if perfect == "false" {
					continue
				}
			}
			if repo.State() != "merge to main" {
				log.Info(header + "")
				continue
			}
			if repo.CheckDirty() {
				log.Info(header + "")
				continue
			}
			log.Info(header + "")
		}
		log.Info(fmt.Sprintf("EVERYTHING WORKED repo count = %d", count))
		return
	}

	// turn off timestamps for STDOUT (systemd adds them)
	if route == "/daemon" {
		log.Info("daemon mode ???")
		log.DaemonMode(false)
		log.Info("daemon mode false")
		return
	}

	if route == "/repo" {
		reponame := r.URL.Query().Get("repo")
		if reponame == "" {
			s := "reponame is blank " + cleanURL(r.URL.Path)
			log.Info(s)
			return
		}
		s := "reponame is " + reponame
		log.Info(s)
		return
	}

	if route == "/quit" {
		log.Warn("writing out config file and exiting virtigo")
		fmt.Fprintln(w, "writing out config file and exiting virtigo")
		os.Exit(0)
		return
	}

	if route == "/favicon.ico" {
		// w.Header().Set("Content-Type", "image/svg+xml")
		w.Header().Set("Content-Type", "image/png")
		writeFile(w, "ipv6.png")
		return
	}

	if route == "/goReference.svg" {
		w.Header().Set("Content-Type", "image/svg+xml")
		writeFile(w, "goReference.svg")
		return
	}

	log.Warn("BAD URL =", route)
	fmt.Fprintln(w, "BAD URL =", route)
}

// write a file out to the http socket
func writeFile(w http.ResponseWriter, filename string) {
	fullname := "resources/" + filename
	pfile, err := resources.ReadFile(fullname)
	if err != nil {
		log.Println("ERROR:", err)
		// w.Write(pfile)
		return
	}

	var repohtml string
	repohtml = string(pfile)
	if filename == "goReference.svg" {
		w.Header().Set("Content-Type", "image/svg+xml")
	}
	fmt.Fprintln(w, repohtml)
	log.Println("writeFile() found internal file:", filename)
}

// starts and sits waiting for HTTP requests
func startHTTP() {
	http.HandleFunc("/", okHandler)

	p := fmt.Sprintf(":%d", myargv.Port)
	log.Println("Running on port", p)

	err := http.ListenAndServe(p, nil)
	if err != nil {
		log.Println("Error starting server:", err)
	}
}