package main

import (
	"bytes"
	"fmt"
	"io"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"path"
	"strings"
	"time"

	"srs.epita.fr/fic-server/dashboard/api"
	"srs.epita.fr/fic-server/libfic"
	"srs.epita.fr/fic-server/settings"

	"github.com/julienschmidt/httprouter"
)

var BaseURL = "/"
var forwarder *string = nil
var fwdPublicJson = false

var indexTmpl []byte

func getIndexHtml(w io.Writer) {
	if len(indexTmpl) == 0 {
		if file, err := os.Open(path.Join(StaticDir, "index.html")); err != nil {
			log.Println("Unable to open index.html: ", err)
		} else {
			defer file.Close()

			if indexTmpl, err = ioutil.ReadAll(file); err != nil {
				log.Println("Cannot read whole index.html: ", err)
			} else {
				indexTmpl = bytes.Replace(indexTmpl, []byte("{{.urlbase}}"), []byte(path.Clean(path.Join(BaseURL+"/", "nuke"))[:len(path.Clean(path.Join(BaseURL+"/", "nuke")))-4]), -1)
			}
		}
	}

	w.Write(indexTmpl)
}

func init() {
	api.Router().GET("/", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.Redirect(w, r, "public0.html", http.StatusFound)
	})
	for i := 0; i <= 9; i++ {
		api.Router().GET(fmt.Sprintf("/public%d.html", i), func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
			getIndexHtml(w)
		})
	}

	api.Router().GET("/css/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/fonts/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/img/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/js/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})
	api.Router().GET("/views/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		http.ServeFile(w, r, path.Join(StaticDir, r.URL.Path))
	})

	api.Router().GET("/files/*_", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(fic.FilesDir, strings.TrimPrefix(r.URL.Path, "/files")))
		}
	})

	api.Router().GET("/events.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(TeamsDir, "events.json"))
		}
	})
	api.Router().GET("/my.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(TeamsDir, "public", "my.json"))
		}
	})
	api.Router().GET("/api/teams/:tid/score-grid.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			fwd_request(w, r, "http://127.0.0.1:8081/")
		}
	})
	api.Router().GET("/api/teams/:tid/stats.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			fwd_request(w, r, "http://127.0.0.1:8081/")
		}
	})
	api.Router().GET("/challenge.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(settings.SettingsDir, settings.ChallengeFile))
		}
	})
	api.Router().GET("/settings.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			w.Header().Set("X-FIC-Time", fmt.Sprintf("%f", float64(time.Now().UnixNano()/1000)/1000000))
			http.ServeFile(w, r, path.Join(settings.SettingsDir, settings.SettingsFile))
		}
	})
	api.Router().GET("/teams.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(TeamsDir, "public", "teams.json"))
		}
	})
	api.Router().GET("/themes.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(TeamsDir, "themes.json"))
		}
	})

	api.Router().GET("/public.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public.json"))
		}
	})
	api.Router().GET("/public0.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public0.json"))
		}
	})
	api.Router().GET("/public1.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public1.json"))
		}
	})
	api.Router().GET("/public2.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public2.json"))
		}
	})
	api.Router().GET("/public3.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public3.json"))
		}
	})
	api.Router().GET("/public4.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public4.json"))
		}
	})
	api.Router().GET("/public5.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public5.json"))
		}
	})
	api.Router().GET("/public6.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public6.json"))
		}
	})
	api.Router().GET("/public7.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public7.json"))
		}
	})
	api.Router().GET("/public8.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public8.json"))
		}
	})
	api.Router().GET("/public9.json", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		w.Header().Set("Cache-Control", "no-cache")
		if forwarder != nil && fwdPublicJson {
			fwd_request(w, r, *forwarder)
		} else {
			http.ServeFile(w, r, path.Join(DashboardDir, "public9.json"))
		}
	})
}