package main

import (
	"encoding/json"
	"net/http"
	"os"

	"git.pyer.club/kingecg/gohttpd/admin"
	handler "git.pyer.club/kingecg/gohttpd/hander"
	"git.pyer.club/kingecg/gohttpd/model"
	"git.pyer.club/kingecg/gohttpd/server"
	"git.pyer.club/kingecg/gologger"
)

type GoHttp struct {
	logger gologger.Logger
}

func (g *GoHttp) Start() {
	conf := model.GetConfig()
	g.logger = gologger.GetLogger("Server")
	g.logger.Info("start gohttpd")
	// if g.conf != nil {

	g.makeServer(conf.Admin, admin.AdminServerMux)

	for _, server := range conf.Servers {
		sHandler := g.assembleServerMux(server.Paths)
		g.makeServer(server, sHandler)
	}

	for _, listener := range server.ServerManager {
		listener.Start()
		listener.Serve()

	}
	g.logger.Info("gohttpd start success")
}

func (g *GoHttp) makeServer(conf *model.HttpServerConfig, mux http.Handler) {
	s := &http.Server{
		Handler: mux,
	}
	name := conf.Name
	port := conf.Port
	ss := &server.Server{
		Server: s,
		Conf:   conf,
	}
	server.AddServer(name, ss, port)
}

func (g *GoHttp) assembleServerMux(p []model.HttpPath) http.Handler {
	s := http.NewServeMux()
	for _, httpPath := range p {
		if httpPath.Root != "" {
			fileHandler := handler.NewFileHandler(handler.FileHandler{
				Root:    httpPath.Root,
				Default: httpPath.Default,
			})
			s.Handle(httpPath.Path, fileHandler)
		} else if len(httpPath.Upstreams) != 0 {
			proxyHandler := handler.NewProxyHandler(&httpPath)
			s.Handle(httpPath.Path, proxyHandler)
		} else {
			g.logger.Error("Not supportted server path type :", httpPath.Path)
		}
	}
	return s
}

func (g *GoHttp) Stop() {}

func LoadConfig(configPath string) {
	cpath := configPath
	if cpath == "" {
		cpath = GetExecDir() + "/config.json"
	}

	// read content from cpath
	content, _ := os.ReadFile(cpath)
	json.Unmarshal(content, &model.Config)
	//normalize path in config
	for _, appender := range model.Config.Logging.Appenders {
		if appender.Type == "file" {
			appender.Options["file"] = NormalizePath(appender.Options["file"].(string))
		}
	}
	normalizeServer(model.Config.Admin)
	for _, server := range model.Config.Servers {
		normalizeServer(server)
	}
	gologger.Configure(model.Config.Logging)
	logger := gologger.GetLogger("Server")
	logger.Info("Load config success")
}

func normalizeServer(server *model.HttpServerConfig) {
	for _, path := range server.Paths {
		if path.Root != "" {
			path.Root = NormalizePath(path.Root)
		}
	}
	if server.CertFile != "" {
		server.CertFile = NormalizePath(server.CertFile)
	}
	if server.KeyFile != "" {
		server.KeyFile = NormalizePath(server.KeyFile)
	}
}