98 lines
2.1 KiB
Go
98 lines
2.1 KiB
Go
package main
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import (
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"context"
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"encoding/json"
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"io/fs"
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"log"
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"net/http"
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"git.yetaga.in/alazyreader/library/book"
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"git.yetaga.in/alazyreader/library/database"
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"git.yetaga.in/alazyreader/library/frontend"
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"github.com/kelseyhightower/envconfig"
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)
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type Config struct {
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DBUser string
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DBPass string
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DBHost string
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DBPort string
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DBName string
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}
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type Library interface {
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GetAllBooks(context.Context) ([]book.Book, error)
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}
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type Router struct {
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static fs.FS
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lib Library
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}
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func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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if req.URL.Path == "/api" {
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APIHandler(r.lib).ServeHTTP(w, req)
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return
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}
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StaticHandler(r.static).ServeHTTP(w, req)
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return
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}
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func APIHandler(l Library) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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books, err := l.GetAllBooks(r.Context())
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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b, err := json.Marshal(books)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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w.Write(b)
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w.Write([]byte("\n"))
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})
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}
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func StaticHandler(f fs.FS) http.Handler {
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return http.FileServer(http.FS(f))
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}
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func main() {
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var c Config
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err := envconfig.Process("library", &c)
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if err != nil {
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log.Fatalln(err)
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}
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f, err := frontend.Root()
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if err != nil {
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log.Fatalln(err)
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}
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if c.DBUser == "" || c.DBPass == "" || c.DBHost == "" || c.DBPort == "" || c.DBName == "" {
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log.Fatalf("vars: %+v", c)
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}
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lib, err := database.NewMySQLConnection(c.DBUser, c.DBPass, c.DBHost, c.DBPort, c.DBName)
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if err != nil {
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log.Fatalln(err)
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}
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err = lib.PrepareDatabase(context.Background())
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if err != nil {
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log.Fatalln(err)
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}
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latest, run, err := lib.RunMigrations(context.Background())
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("latest migration: %d; migrations run: %d", latest, run)
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r := &Router{
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static: f,
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lib: lib,
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}
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log.Println("Listening on http://localhost:8080/")
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log.Fatalln(http.ListenAndServe(":8080", r))
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}
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