main.go

package main

import (
	"database/sql"
	"log"
	"net/http"
	"os"
	"sync/atomic"

	"github.com/joho/godotenv"
	_ "github.com/lib/pq"
	"github.com/nk-reddy/chirpy/internal/database"
)

type apiConfig struct {
	fileserverHits atomic.Int32
	db             *database.Queries
	platform       string
	jwtSK          string
	polkaKey       string
}

func main() {
	const filepathRoot = "."
	const port = "8080"

	godotenv.Load()
	jwt_sk := os.Getenv("JWT_SECRET_KEY")
	polka_key := os.Getenv("POLKA_KEY")
	dbURL := os.Getenv("DB_URL")
	if dbURL == "" {
		log.Fatal("DB_URL must be set")
	}

	dbConn, err := sql.Open("postgres", dbURL)
	if err != nil {
		log.Fatalf("Error opening database: %s", err)
	}
	dbQueries := database.New(dbConn)

	apiCfg := apiConfig{
		fileserverHits: atomic.Int32{},
		db:             dbQueries,
		platform:       os.Getenv("PLATFORM"),
		jwtSK:          jwt_sk,
		polkaKey:       polka_key,
	}

	mux := http.NewServeMux()
	fsHandler := apiCfg.middlewareMetricsInc(http.StripPrefix("/app", http.FileServer(http.Dir(filepathRoot))))
	mux.Handle("/app/", fsHandler)

	mux.HandleFunc("POST /api/users", apiCfg.handlerCreateUser)
	mux.HandleFunc("POST /api/chirps", apiCfg.handlerPostChirp)
	mux.HandleFunc("POST /api/login", apiCfg.handlerUserLogin)
	mux.HandleFunc("POST /api/refresh", apiCfg.handlerRefresh)
	mux.HandleFunc("POST /api/revoke", apiCfg.handlerRevoke)

	mux.HandleFunc("PUT /api/users", apiCfg.handlerUpdateUser)

	mux.HandleFunc("GET /api/chirps", apiCfg.handlerGetAllChirps)
	mux.HandleFunc("GET /api/chirps/{chirpID}", apiCfg.handlerGetChirp)
	mux.HandleFunc("GET /api/healthz", handlerReadiness)

	mux.HandleFunc("DELETE /api/chirps/{chirpID}", apiCfg.handlerDeleteChirp)

	mux.HandleFunc("POST /api/polka/webhooks", apiCfg.handlerUpgradeUser)

	mux.HandleFunc("POST /admin/reset", apiCfg.handlerReset)
	mux.HandleFunc("GET /admin/metrics", apiCfg.handlerMetrics)

	srv := &http.Server{
		Addr:    ":" + port,
		Handler: mux,
	}

	log.Printf("Serving files from %s on port: %s\n", filepathRoot, port)
	log.Fatal(srv.ListenAndServe())
}