go-bouquins/main.go
Meutel 229c2d535e
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Version
* log on startup
* display on about page
* use compile flag
* set with git tag value
2019-09-28 16:56:44 +02:00

134 lines
3.1 KiB
Go

package main
import (
"database/sql"
"log"
"net/http"
"os"
"gopkg.in/yaml.v2"
"golang.org/x/oauth2"
"github.com/gorilla/sessions"
_ "github.com/mattn/go-sqlite3"
"meutel.net/meutel/go-bouquins/bouquins"
)
var (
version string
)
// ReadConfig loads configuration file and initialize default value
func ReadConfig() (*bouquins.Conf, error) {
conf := new(bouquins.Conf)
confPath := "bouquins.yml"
if len(os.Args) > 1 {
confPath = os.Args[1]
}
confFile, err := os.Open(confPath)
if err == nil {
defer confFile.Close()
err = yaml.NewDecoder(confFile).Decode(conf)
} else {
log.Println("no conf file, using defaults")
err = nil
}
// default values
if conf.CalibrePath == "" {
conf.CalibrePath = "./data"
}
if conf.DbPath == "" {
conf.DbPath = conf.CalibrePath + "/metadata.db"
}
if conf.UserDbPath == "" {
conf.UserDbPath = "./data/users.db"
}
if conf.BindAddress == "" {
conf.BindAddress = ":9000"
}
return conf, err
}
func initApp() *bouquins.Bouquins {
log.SetFlags(log.LstdFlags | log.Lshortfile)
conf, err := ReadConfig()
if err != nil {
log.Fatalln(err)
}
tpl, err := bouquins.TemplatesFunc(conf.Prod, version).ParseGlob("templates/*.html")
if err != nil {
log.Fatalln(err)
}
db, err := sql.Open("sqlite3", conf.DbPath)
if err != nil {
log.Fatalln(err)
}
userdb, err := sql.Open("sqlite3", conf.UserDbPath)
if err != nil {
log.Fatalln(err)
}
app := &bouquins.Bouquins{
Tpl: tpl,
DB: db,
UserDB: userdb,
Conf: conf,
OAuthConf: make(map[string]*oauth2.Config),
Cookies: sessions.NewCookieStore([]byte(conf.CookieSecret)),
}
for _, provider := range bouquins.Providers {
app.OAuthConf[provider.Name()] = provider.Config(conf)
}
err = app.PrepareAll()
if err != nil {
log.Fatalln(err)
}
router(app)
return app
}
func assets(calibre string) {
http.Handle(bouquins.URLJs, http.FileServer(http.Dir("assets")))
http.Handle(bouquins.URLCss, http.FileServer(http.Dir("assets")))
http.Handle(bouquins.URLFonts, http.FileServer(http.Dir("assets")))
}
func handle(f func(res http.ResponseWriter, req *http.Request) error) func(res http.ResponseWriter, req *http.Request) {
return func(res http.ResponseWriter, req *http.Request) {
err := f(res, req)
if err != nil {
log.Println(err)
http.Error(res, err.Error(), 500)
}
}
}
func handleURL(url string, f func(res http.ResponseWriter, req *http.Request) error) {
http.HandleFunc(url, handle(f))
}
func router(app *bouquins.Bouquins) {
assets(app.Conf.CalibrePath)
http.Handle(bouquins.URLCalibre, app.CalibreFileServer())
handleURL(bouquins.URLIndex, app.IndexPage)
handleURL(bouquins.URLLogin, app.LoginPage)
handleURL(bouquins.URLLogout, app.LogoutPage)
handleURL(bouquins.URLCallback, app.CallbackPage)
handleURL(bouquins.URLBooks, app.BooksPage)
handleURL(bouquins.URLAuthors, app.AuthorsPage)
handleURL(bouquins.URLSeries, app.SeriesPage)
handleURL(bouquins.URLSearch, app.SearchPage)
handleURL(bouquins.URLAbout, app.AboutPage)
}
func main() {
log.Println("go-bouquins", version)
app := initApp()
defer app.DB.Close()
defer app.UserDB.Close()
http.ListenAndServe(app.Conf.BindAddress, nil)
}