package main

import (
	"biukop/sfm/loan"
	"encoding/json"
	"fmt"
	log "github.com/sirupsen/logrus"
	"net/http"
	"net/http/httputil"
	"strings"
)

type httpEntry func(http.ResponseWriter, *http.Request)

var httpEntryMap = map[string]httpEntry{
	apiV1Prefix: apiV1Main,
	"/dummy/":   dummyHandler,
}

func main() {

	err := config.readConfig() //wechat API config
	if err != nil {
		log.Println(err)
		log.Fatalf("unable to read %s, program quit\n", configFile)
		return
	}

	setupRootFileServer()
	//always the last one
	setupHTTPHandler()

}

func setupRootFileServer() {
	//root of doc
	for idx, node := range config.Static {
		log.Printf("setting up static %d with %+v\n", idx, node)
		fs := http.FileServer(http.Dir(node.Dir))
		http.Handle(node.StaticUrl, http.StripPrefix(node.StripPrefix, fs))
	}
}

func setupHTTPHandler() {

	for key, val := range httpEntryMap {
		http.HandleFunc(key, val)
	}

	log.Printf("Server started at %s:%s\n", config.Host, config.Port)
	log.Fatal(http.ListenAndServe(config.Host+":"+config.Port, nil))

}

func dummyHandler(w http.ResponseWriter, r *http.Request) {
	p := loan.People{}
	p.FakeNew()
	fmt.Fprintf(w, "Hello, there %s, %+v\n", loan.Version, p)
}

func apiSendJson(p interface{}, w http.ResponseWriter) {
	b, e := json.Marshal(p)
	w.Header().Set("Content-Type", "text/json; charset=utf-8")
	if e == nil {
		fmt.Fprint(w, string(b))
	} else {
		apiV1DumpRequest(w, nil, nil)
	}
}

func apiV1DumpRequest(w http.ResponseWriter, r *http.Request, ss *loan.Session) {
	dump := logRequestDebug(httputil.DumpRequest(r, true))
	dump = strings.TrimSpace(dump)
	msg := fmt.Sprintf("Unhandled Protocol = %s path= %s", r.Method, r.URL.Path)
	dumpLines := strings.Split(dump, "\r\n")
	ar := apiV1ResponseBlank()
	ar.Env.Msg = msg
	ar.Env.Session = *ss
	ar.Env.Session.Bin = []byte("masked data") //clear
	ar.Env.Session.Secret = "***********"
	ar.add("Body", dumpLines)
	ar.add("mid", ss.Get("mid"))
	b, _ := ar.toJson()
	fmt.Fprintf(w, "%s\n", b)
}