initial commit

.env.sample

@@ -0,0 +1,4 @@
+# link to your mongodb database
+DATABASE_URL=mongodb://localhost:27017
+# name of the database to use
+DATABASE_NAME=test

.gitignore

@@ -14,5 +14,9 @@
 # Dependency directories (remove the comment below to include it)
 vendor/
 
-*.DS_Store
-.env*
+*.DS_Store*
+.env*
+!.env.sample
+botx
+main
+.idea/

README.md

@@ -1,2 +1,7 @@
 # botx
-Automate any thing you wish to be automated on Slack!
+
+<div align="center">
+    A slack search enthusiast and a friendly messenger bot!
+    <br />
+    <img src="https://raw.githubusercontent.com/rwandaopensource/botx/master/static/botx.png" />
+</div>

botx.go

@@ -0,0 +1,2 @@
+package botx
+

cmd/main.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/rwandaopensource/botx/pkg/database"
+)
+
+func main() {
+	defer closeOpenHandle()
+}
+
+func closeOpenHandle() {
+	err := database.Client.Disconnect(context.TODO())
+	if err != nil {
+		log.Fatalln(err)
+	}
+}

go.mod

@@ -1,5 +1,8 @@
-module github.com/urbanishimwe/botx
+module github.com/rwandaopensource/botx
 
 go 1.14
 
-require github.com/joho/godotenv v1.3.0
+require (
+	github.com/joho/godotenv v1.3.0
+	go.mongodb.org/mongo-driver v1.3.2
+)

go.sum

@@ -0,0 +1,108 @@
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pkg/config/config.go

@@ -0,0 +1,52 @@
+package config
+
+import (
+	"errors"
+	"log"
+	"os"
+	"strings"
+
+	env "github.com/joho/godotenv"
+)
+
+// ErrEnv error returned when one the variables are missing
+var ErrEnv error = errors.New("one or more of the environments are missing")
+
+// Env contains all necessary environment variables of this application
+var Env map[string]string = map[string]string{}
+
+func init() {
+	var (
+		mode string = os.Getenv("GO_ENV")
+		file        = ".env"
+	)
+	switch mode {
+	case "development", "production", "test":
+		file += ("." + mode)
+	default:
+		break
+	}
+	if err := env.Load(); err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			log.Println("environment file not found using os environment")
+		} else {
+			log.Fatalln(err)
+		}
+	}
+	config()
+}
+
+// validate missing variables
+func config() {
+	Env["DATABASE_URL"] = os.Getenv("DATABASE_URL")
+	Env["DATABASE_NAME"] = os.Getenv("DATABASE_NAME")
+	var missingEnv string
+	for key, value := range Env {
+		if value == "" {
+			missingEnv = missingEnv + ", " + key
+		}
+	}
+	if missingEnv != "" {
+		log.Fatalln(ErrEnv, strings.Trim(missingEnv, ", "))
+	}
+}

pkg/database/database.go

@@ -0,0 +1,51 @@
+package database
+
+import (
+	"context"
+	"errors"
+	"log"
+	"time"
+
+	"github.com/rwandaopensource/botx/pkg/config"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+)
+
+// Client is the mongodb client of the whole application
+var Client *mongo.Client
+
+// DB default database to use
+var DB *mongo.Database
+
+func init() {
+	log.Println("all env variables ✅!")
+	var err error
+	var (
+		errDBOptions = errors.New("invalid database options")
+		errDBPing    = errors.New("could not ping the db connection")
+	)
+	dbURL := config.Env["DATABASE_URL"]
+	dbName := config.Env["DATABASE_NAME"]
+	opts := options.Client()
+	opts.ApplyURI(dbURL)
+	opts.SetMaxPoolSize(0)
+	opts.SetRetryReads(true)
+	opts.SetRetryWrites(true)
+	opts.SetSocketTimeout(time.Second * 5)
+	opts.SetMaxConnIdleTime(time.Second * 5)
+	if opts.Validate() != nil {
+		log.Fatalln(errDBOptions)
+	}
+	Client, err = mongo.Connect(context.TODO(), opts)
+	if err != nil {
+		log.Fatalln("db connection error:", err)
+	}
+	err = Client.Ping(context.TODO(), nil)
+	if err != nil {
+		log.Fatalln(errDBPing, err)
+	}
+	DB = Client.Database(dbName)
+	if DB != nil {
+		log.Println("db connected ✅!")
+	}
+}

pkg/version/version.go

@@ -0,0 +1,4 @@
+package version
+
+// VERSION is current version of the app
+var VERSION = "0.0.0"