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main.go

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package main

import (

"context"

"database/sql"

"embed"

"errors"

"log"

"net/http"

"os"

"os/signal"

"time"

"github.com/go-chi/chi/v5"

_ "github.com/mattn/go-sqlite3"

)

//go:embed assets/*

var assets embed.FS

type App struct {

db *sql.DB

}

func main() {

db, err := sql.Open("sqlite3", "paste.db")

if err != nil {

panic(err)

}

_, err = db.Exec("PRAGMA journal_mode=WAL")

if err != nil {

panic(err)

}

query := `CREATE TABLE IF NOT EXISTS pastes(

id TEXT PRIMARY KEY,

created_at INTEGER NOT NULL,

country_code TEXT NOT NULL,

views INTEGER NOT NULL DEFAULT 0,

last_view INTEGER DEFAULT NULL,

content BLOB NOT NULL

) STRICT`

_, err = db.Exec(query)

if err != nil {

panic(err)

}

app := &App{

db: db,

}

router := chi.NewRouter()

router.Use(app.RealIP)

router.Use(app.RateLimit)

router.Use(app.LogRequest)

router.Get("/", app.GetIndex)

router.Post("/save", app.PostSave())

router.Get("/{id:[A-Za-z0-9]{8}}", app.GetPaste)

router.Get("/raw/{id:[A-Za-z0-9]{8}}", app.GetRawPaste)

router.Get("/*", app.ServeAssets)

router.NotFound(app.NotFound)

router.MethodNotAllowed(app.MethodNotAllowed)

server := &http.Server{

Addr: ":80",

Handler: router,

ReadTimeout: 5 * time.Minute,

WriteTimeout: 5 * time.Minute,

}

go func() {

if err := server.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {

panic(err)

}

}()

c := make(chan os.Signal, 1)

signal.Notify(c, os.Interrupt)

<-c

ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)

defer cancel()

if err := server.Shutdown(ctx); err != nil {

log.Println(err)

}

}