start implementing an api for the commands

.gitignore

@@ -16,3 +16,7 @@
 
 .env
 Nourybot
+Nourybot-Api
+nourybot-api
+Nourybot-Web
+nourybot-web

Makefile

@@ -9,3 +9,6 @@ xd:
 
 jq:
 	cd cmd/bot && go build -o Nourybot && ./Nourybot | jq
+
+jqapi:
+	cd cmd/api && go build -o Nourybot-Api && ./Nourybot-Api | jq

cmd/api/command.go

@@ -0,0 +1,64 @@
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+
+	"github.com/lyx0/nourybot/internal/data"
+)
+
+func (app *application) showCommandHandler(w http.ResponseWriter, r *http.Request) {
+	name, err := app.readCommandNameParam(r)
+	if err != nil {
+		// app.Logger.Errorf("showCommandHandler, Command not found", err)
+		return
+	}
+
+	// Get the data for a specific movie from our helper method,
+	// then check if an error was returned, and which.
+	command, err := app.Models.Commands.Get(name)
+	if err != nil {
+		switch {
+		case errors.Is(err, data.ErrRecordNotFound):
+			app.Logger.Errorf("showCommandHandler, Command not found", err)
+			return
+		default:
+			app.serverErrorResponse(w, r, err)
+		}
+		return
+	}
+	app.Logger.Info("Command Name:", command.Name)
+	err = app.writeJSON(w, http.StatusOK, envelope{"movie": command}, nil)
+	// if err != nil {
+	// 	app.serverErrorResponse(w, r, err)
+	// }
+}
+
+type envelope map[string]interface{}
+
+func (app *application) writeJSON(w http.ResponseWriter, status int, data envelope, headers http.Header) error {
+	// Encode the data into JSON and return any errors if there were any.
+	// Use MarshalIndent instead of normal Marshal so it looks prettier on terminals.
+	js, err := json.MarshalIndent(data, "", "\t")
+	if err != nil {
+		return err
+	}
+
+	// Append a newline to make it prettier on terminals.
+	js = append(js, '\n')
+
+	// Iterate over the header map and add each header to the
+	// http.ResponseWriter header map.
+	for key, value := range headers {
+		w.Header()[key] = value
+	}
+
+	// Set `Content-Type` to `application/json` because go
+	// defaults to `text-plain; charset=utf8`.
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	w.Write(js)
+
+	return nil
+}

cmd/api/errors.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func (app *application) serverErrorResponse(w http.ResponseWriter, r *http.Request, err error) {
+	app.logError(r, err)
+
+	message := "the server encountered a problem and could not process your request"
+	app.errorResponse(w, r, http.StatusInternalServerError, message)
+}
+
+// The logError() method is a generic helper for logging an error message. Later in the
+// book we'll upgrade this to use structured logging, and record additional information
+// about the request including the HTTP method and URL.
+func (app *application) logError(r *http.Request, err error) {
+	app.Logger.Infow("logError",
+		"error", err)
+}
+
+func (app *application) errorResponse(w http.ResponseWriter, r *http.Request, status int, message interface{}) {
+
+	// Write the response using the writeJSON() helper. If this happens to return an
+	// error then log it, and fall back to sending the client an empty response with a
+	// 500 Internal Server Error status code.
+	fmt.Fprintf(w, "Error: %s", status)
+}

cmd/api/helpers.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"errors"
+	"net/http"
+	"strconv"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+func (app *application) readIDParam(r *http.Request) (int64, error) {
+	params := httprouter.ParamsFromContext(r.Context())
+
+	// Use `ByName()` function to get the value of the "id" parameter from the slice.
+	// The value returned by `ByName()` is always a string so we try to convert it to
+	// base64 with a bit size of 64.
+	id, err := strconv.ParseInt(params.ByName("id"), 10, 64)
+	if err != nil || id < 1 {
+		return 0, errors.New("invalid id parameter")
+	}
+
+	return id, nil
+}
+
+func (app *application) readCommandNameParam(r *http.Request) (string, error) {
+	params := httprouter.ParamsFromContext(r.Context())
+	app.Logger.Info(r.Context())
+
+	// Use `ByName()` function to get the value of the "id" parameter from the slice.
+	// The value returned by `ByName()` is always a string so we try to convert it to
+	// base64 with a bit size of 64.
+	name := params.ByName("name")
+
+	return name, nil
+}

cmd/api/main.go

@@ -0,0 +1,111 @@
+package main
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/joho/godotenv"
+	_ "github.com/lib/pq"
+	"github.com/lyx0/nourybot/internal/data"
+	"go.uber.org/zap"
+)
+
+type config struct {
+	port int
+	db   struct {
+		dsn          string
+		maxOpenConns int
+		maxIdleConns int
+		maxIdleTime  string
+	}
+}
+
+type application struct {
+	Logger *zap.SugaredLogger
+	Db     *sql.DB
+	Models data.Models
+}
+
+func main() {
+	var cfg config
+
+	// Initialize a new sugared logger that we'll pass on
+	// down through the application.
+	sugar := zap.NewExample().Sugar()
+	defer sugar.Sync()
+
+	err := godotenv.Load()
+	if err != nil {
+		log.Fatal("Error loading .env file")
+	}
+
+	// Database
+	cfg.db.dsn = os.Getenv("DB_DSN")
+	cfg.port = 3000
+	cfg.db.maxOpenConns = 25
+	cfg.db.maxIdleConns = 25
+	cfg.db.maxIdleTime = "15m"
+
+	// Establish database connection
+	db, err := openDB(cfg)
+	if err != nil {
+		sugar.Fatal(err)
+	}
+
+	// Initialize Application
+	app := &application{
+		Logger: sugar,
+		Db:     db,
+		Models: data.NewModels(db),
+	}
+
+	srv := &http.Server{
+		Addr:         fmt.Sprintf(":%d", cfg.port),
+		Handler:      app.routes(),
+		IdleTimeout:  time.Minute,
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 10 * time.Second,
+	}
+
+	err = srv.ListenAndServe()
+	sugar.Fatal(err)
+
+}
+
+// openDB returns the sql.DB connection pool.
+func openDB(cfg config) (*sql.DB, error) {
+	// sql.Open() creates an empty connection pool with the provided DSN
+	db, err := sql.Open("postgres", cfg.db.dsn)
+	if err != nil {
+		return nil, err
+	}
+
+	// Set database restraints.
+	db.SetMaxOpenConns(cfg.db.maxOpenConns)
+	db.SetMaxIdleConns(cfg.db.maxIdleConns)
+
+	// Parse the maxIdleTime string into an actual duration and set it.
+	duration, err := time.ParseDuration(cfg.db.maxIdleTime)
+	if err != nil {
+		return nil, err
+	}
+	db.SetConnMaxIdleTime(duration)
+
+	// Create a new context with a 5 second timeout.
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// db.PingContext() is needed to actually check if the
+	// connection to the database was successful.
+	err = db.PingContext(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	return db, nil
+}

cmd/api/routes.go

@@ -0,0 +1,14 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+func (app *application) routes() *httprouter.Router {
+	router := httprouter.New()
+
+	router.HandlerFunc(http.MethodGet, "/v1/commands/:name", app.showCommandHandler)
+	return router
+}

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/dustin/go-humanize v1.0.0
 	github.com/gempir/go-twitch-irc/v3 v3.2.0
 	github.com/joho/godotenv v1.4.0
+	github.com/julienschmidt/httprouter v1.3.0
 	github.com/lib/pq v1.10.6
 	go.uber.org/zap v1.21.0
 )

go.sum

@@ -11,6 +11,8 @@ github.com/gempir/go-twitch-irc/v3 v3.2.0 h1:ENhsa7RgBE1GMmDqe0iMkvcSYfgw6ZsXilt
 github.com/gempir/go-twitch-irc/v3 v3.2.0/go.mod h1:/W9KZIiyizVecp4PEb7kc4AlIyXKiCmvlXrzlpPUytU=
 github.com/joho/godotenv v1.4.0 h1:3l4+N6zfMWnkbPEXKng2o2/MR5mSwTrBih4ZEkkz1lg=
 github.com/joho/godotenv v1.4.0/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/julienschmidt/httprouter v1.3.0 h1:U0609e9tgbseu3rBINet9P48AI/D3oJs4dN7jwJOQ1U=
+github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=

web/pages/index.tsx

@@ -14,12 +14,11 @@ const Home: NextPage = () => {
 
       <main className={styles.main}>
         <h1 className={styles.title}>
-          Welcome to <a href="https://nextjs.org">Next.js!</a>
+          Nourybot 
         </h1>
 
         <p className={styles.description}>
-          Get started by editing{' '}
-          <code className={styles.code}>pages/index.tsx</code>
+          A lidl Twitch bot made by <a href="https://twitch.tv/nourylul">Noury</a> 
         </p>
 
         <div className={styles.grid}>