Backend Server for TODO

.gitignore

@@ -0,0 +1 @@
+.env

go.mod

@@ -0,0 +1,22 @@
+module github.com/professorabhay/golang-react-todo
+
+go 1.21.5
+
+require (
+	github.com/gorilla/mux v1.8.1
+	github.com/joho/godotenv v1.5.1
+	go.mongodb.org/mongo-driver v1.13.1
+)
+
+require (
+	github.com/golang/snappy v0.0.1 // indirect
+	github.com/klauspost/compress v1.13.6 // indirect
+	github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.1.2 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
+	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d // indirect
+	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 // indirect
+	golang.org/x/text v0.7.0 // indirect
+)

go.sum

@@ -0,0 +1,55 @@
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
+github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
+github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
+github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
+github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe h1:iruDEfMl2E6fbMZ9s0scYfZQ84/6SPL6zC8ACM2oIL0=
+github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
+github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
+github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
+github.com/xdg-go/scram v1.1.2 h1:FHX5I5B4i4hKRVRBCFRxq1iQRej7WO3hhBuJf+UUySY=
+github.com/xdg-go/scram v1.1.2/go.mod h1:RT/sEzTbU5y00aCK8UOx6R7YryM0iF1N2MOmC3kKLN4=
+github.com/xdg-go/stringprep v1.0.4 h1:XLI/Ng3O1Atzq0oBs3TWm+5ZVgkq2aqdlvP9JtoZ6c8=
+github.com/xdg-go/stringprep v1.0.4/go.mod h1:mPGuuIYwz7CmR2bT9j4GbQqutWS1zV24gijq1dTyGkM=
+github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d h1:splanxYIlg+5LfHAM6xpdFEAYOk8iySO56hMFq6uLyA=
+github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d/go.mod h1:rHwXgn7JulP+udvsHwJoVG1YGAP6VLg4y9I5dyZdqmA=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+go.mongodb.org/mongo-driver v1.13.1 h1:YIc7HTYsKndGK4RFzJ3covLz1byri52x0IoMB0Pt/vk=
+go.mongodb.org/mongo-driver v1.13.1/go.mod h1:wcDf1JBCXy2mOW0bWHwO/IOYqdca1MPCwDtFu/Z9+eo=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d h1:sK3txAijHtOK88l68nt020reeT1ZdKLIYetKl95FzVY=
+golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 h1:uVc8UZUe6tr40fFVnUP5Oj+veunVezqYl9z7DYw9xzw=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"github.com/professorabhay/golang-react-todo/router"
+)
+
+func main(){
+	r := router.Router()
+	fmt.Println("Starting server on the port 9000...")
+
+	log.Fatal(http.ListenAndServe(":9000", r))
+}

middleware/middleware.go

@@ -0,0 +1,189 @@
+package middleware
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/gorilla/mux"
+	"github.com/joho/godotenv"
+	"github.com/professorabhay/golang-react-todo/models"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+)
+
+var collection *mongo.Collection
+
+func init(){
+	loadTheEnv()
+	createDBInstance()
+}
+
+func loadTheEnv(){
+	err := godotenv.Load(".env")
+	if err != nil {
+		log.Fatal("Error loading .env file")
+	}
+}
+
+func createDBInstance(){
+	connectionString := os.Getenv("DB_URI")
+	dbName := os.Getenv("DB_NAME")
+	collectionName := os.Getenv("DB_COLLECTION")
+
+	clientOptions := options.Client().ApplyURI(connectionString)
+	client, err := mongo.Connect(context.TODO(), clientOptions)
+
+	if err!=nil{
+		log.Fatal(err)	
+	}
+
+	err = client.Ping(context.TODO(), nil)
+	if err!=nil{ 
+		log.Fatal(err)
+	}
+
+	fmt.Println("Connected to MongoDB!")
+
+	collection = client.Database(dbName).Collection(collectionName)
+	fmt.Println("Collection instance created!")
+}
+
+func GetAllTasks(w http.ResponseWriter, r *http.Request){
+	w.Header().Set("Content-Type", "application/x-www-form-urlencoded")
+	w.Header().Set("Access-Control-Allow-Origin","*") // to allow cross origin requests
+	payload := getAllTasks()
+	json.NewEncoder(w).Encode(payload)
+}
+
+func CreateTask(w http.ResponseWriter, r *http.Request){
+	w.Header().Set("Content-Type", "application/x-www-form-urlencoded")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+	w.Header().Set("Access-Control-Allow-Methods", "POST")
+	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+	var task models.ToDoList
+	json.NewDecoder(r.Body).Decode(&task)
+	insertOneTask(task)
+	json.NewEncoder(w).Encode(task)
+}
+
+func TaskComplete(w http.ResponseWriter, r *http.Request){
+	w.Header().Set("Content-Type", "application/x-www-form-urlencoded")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+	w.Header().Set("Access-Control-Allow-Methods", "PUT")
+	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+
+	params := mux.Vars(r)
+	taskComplete(params["id"])
+	json.NewEncoder(w).Encode(params["id"])
+}
+
+func UndoTask(w http.ResponseWriter, r *http.Request){
+	w.Header().Set("Content-Type", "application/x-www-form-urlencoded")
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+	w.Header().Set("Access-Control-Allow-Methods", "PUT")
+	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+
+	params := mux.Vars(r)
+	undoTask(params["id"])
+	json.NewEncoder(w).Encode(params["id"])
+}
+
+func DeleteTask(w http.ResponseWriter, r *http.Request){
+	w.Header().Set("Content-Type", "application/x-www-form-urlencoded")
+	w.Header().Set("Access-Control-Allow-Origin","*")
+	w.Header().Set("Access-Control-Allow-Methods","DELETE")
+	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+
+	params := mux.Vars(r)
+	deleteTask(params["id"])
+	json.NewEncoder(w).Encode(params["id"])
+
+}
+
+func DeleteAllTasks(w http.ResponseWriter, r *http.Request){
+	w.Header().Set("Content-Type", "application/x-www-form-urlencoded")
+	w.Header().Set("Access-Control-Allow-Origin","*")
+
+	count := deleteAllTasks()
+	json.NewEncoder(w).Encode(count)
+
+}
+
+func getAllTasks() []primitive.M{
+	cur, err := collection.Find(context.Background(), bson.D{{}})
+	if err!=nil{
+		log.Fatal(err)
+	}
+
+	var results []primitive.M
+	for cur.Next(context.Background()){
+		var result bson.M
+		e := cur.Decode(&result)
+		if e!=nil{
+			log.Fatal(e)
+		}
+		results = append(results, result)
+	}
+	if err := cur.Err(); err != nil{
+
+		log.Fatal(err)
+	}
+	cur.Close(context.Background())
+	return results
+}
+
+func taskComplete(task string){
+	id, _ := primitive.ObjectIDFromHex(task)
+	filter := bson.M{"_id": id}
+	update := bson.M{"$set": bson.M{"isCompleted": true}}
+	result, err := collection.UpdateOne(context.Background(), filter, update)
+	if err!=nil{
+		log.Fatal(err)
+	}
+	fmt.Println("modified count:", result.ModifiedCount)
+}
+
+func insertOneTask(task models.ToDoList){
+	insertResult, err := collection.InsertOne(context.Background(), task)
+	if err!=nil{
+		log.Fatal(err)
+	}
+	fmt.Println("Inserted a single record", insertResult.InsertedID)
+}
+
+func undoTask(task string){
+	id,_ := primitive.ObjectIDFromHex(task)
+	filter := bson.M{"_id":id}
+	update := bson.M{"$set":bson.M{"status": false}}
+	result, err := collection.UpdateOne(context.Background(), filter, update)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("modified count:", result.ModifiedCount)
+}
+
+func deleteTask(task string){
+	id, _ := primitive.ObjectIDFromHex(task)
+	filter := bson.M{"_id":id}
+	d, err := collection.DeleteOne(context.Background(), filter)
+	if err!=nil{
+		log.Fatal(err)
+	}
+	fmt.Println("Deleted Document", d.DeletedCount)
+
+}
+
+func deleteAllTasks() int64 {
+	d, err := collection.DeleteMany(context.Background(), bson.D{{}}, nil)
+	if err !=nil {
+		log.Fatal(err)
+	}
+	fmt.Println("Deleted document", d.DeletedCount)
+	return d.DeletedCount
+}

models/models.go

@@ -0,0 +1,9 @@
+package models
+
+import "go.mongodb.org/mongo-driver/bson/primitive"
+
+type ToDoList struct { 
+	ID      primitive.ObjectID  `json:"_id,omitempty"    bson:"_id,omitempty"`
+	Task    string              `json:"task,omitempty"`
+	Status  bool                `json:"status,omitempty"`
+}

router/router.go

@@ -0,0 +1,20 @@
+package router
+
+import (
+	"github.com/professorabhay/golang-react-todo/middleware"
+	"github.com/gorilla/mux"
+)
+
+func Router() *mux.Router{
+
+	router := mux.NewRouter()
+
+	router.HandleFunc("/api/task", middleware.GetAllTasks).Methods("GET", "OPTIONS")
+	router.HandleFunc("/api/tasks", middleware.CreateTask).Methods("POST", "OPTIONS")
+	router.HandleFunc("/api/tasks/{id}", middleware.TaskComplete ).Methods("PUT", "OPTIONS")
+	router.HandleFunc("/api/undoTask/{id}", middleware.UndoTask).Methods("PUT", "OPTIONS")
+	router.HandleFunc("/api/deleteTask/{id}", middleware.DeleteTask).Methods("DELETE", "OPTIONS")
+	router.HandleFunc("/api/deleteAllTasks", middleware.DeleteAllTasks).Methods("DELETE", "OPTIONS")
+
+	return router
+}