Simple REST API to Add and Read TODO items.

code/mytodo/data/db.go

+package data
+
+import "gitlab.reutlingen-university.de/schmolli/todo/model"
+
+var Todos = []model.Todo{}
+var NextId = 0

code/mytodo/handler/todo.go

+package handler
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"gitlab.reutlingen-university.de/schmolli/todo/data"
+	"gitlab.reutlingen-university.de/schmolli/todo/model"
+)
+
+func AddTodo(c *gin.Context) {
+	var todo model.Todo
+	if err := c.BindJSON(&todo); err != nil {
+		c.IndentedJSON(http.StatusBadRequest, fmt.Sprintf("{\"error message\" : \"%s\"}", err.Error()))
+	}
+	todo.ID = data.NextId
+	data.NextId++
+	data.Todos = append(data.Todos, todo)
+	c.IndentedJSON(http.StatusCreated, todo)
+}
+
+func GetTodos(c *gin.Context) {
+	c.IndentedJSON(http.StatusOK, data.Todos)
+}
+
+func GetToDoByID(c *gin.Context) {
+	id, err := strconv.Atoi(c.Param("id"))
+	if err != nil {
+		c.IndentedJSON(http.StatusBadRequest, gin.H{"message": "illegal id "})
+		return
+	}
+
+	for _, t := range data.Todos {
+		if t.ID == id {
+			c.IndentedJSON(http.StatusOK, t)
+			return
+		}
+	}
+	c.IndentedJSON(http.StatusNotFound, gin.H{"message": "Todo not found"})
+}

code/mytodo/main.go

 package main
 
 import (
-	"fmt"
-
 	"github.com/gin-gonic/gin"
 	"gitlab.reutlingen-university.de/schmolli/todo/handler"
-	"gitlab.reutlingen-university.de/schmolli/todo/model"
 )
 
 func main() {
-	todo := model.CreateTodo("Coden")
-	fmt.Println(todo.Description)
 	r := gin.Default()
-	r.GET("/health", handler.Health)
+	r.GET("/mytodo/health", handler.Health)
+	r.GET("/mytodo/todos", handler.GetTodos)
+	r.GET("/mytodo/todos/:id", handler.GetToDoByID)
+	r.POST("/mytodo/todos", handler.AddTodo)
 	r.Run(":10000")
 }

code/mytodo/model/todo.go

 package model
 
 type Todo struct {
-	Description string
-}
-
-func CreateTodo(Description string) Todo {
-	var todo Todo
-	todo.Description = Description
-	return todo
+	ID          int    `json:"id"`
+	Description string `json:"description"`
 }