Add get task/id (#30)

Closes #22

Reviewed-on: #30

backend/main.go

@@ -3,6 +3,8 @@ package main
 import (
 	"context"
 	"embed"
+	"errors"
+	"gitea.seeseepuff.be/seeseemelk/mysqlite"
 	"log"
 	"net"
 	"net/http"
@@ -234,6 +236,27 @@ func getTasks(c *gin.Context) {
 	c.JSON(http.StatusOK, &response)
 }
 
+func getTask(c *gin.Context) {
+	taskIdStr := c.Param("taskId")
+	taskId, err := strconv.Atoi(taskIdStr)
+	if err != nil {
+		log.Printf("Invalid task ID: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid task ID"})
+		return
+	}
+	response, err := db.GetTask(taskId)
+	if errors.Is(err, mysqlite.ErrNoRows) {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Task not found"})
+		return
+	}
+	if err != nil {
+		log.Printf("Error getting task: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": ErrInternalServerError})
+		return
+	}
+	c.JSON(http.StatusOK, &response)
+}
+
 /*
 *
 Initialises the database, and then starts the server.
@@ -251,6 +274,7 @@ func start(ctx context.Context, config *ServerConfig) {
 	router.DELETE("/api/user/:userId/goal/:goalId", deleteUserGoal)
 	router.POST("/api/tasks", createTask)
 	router.GET("/api/tasks", getTasks)
+	router.GET("/api/task/:taskId", getTask)
 
 	srv := &http.Server{
 		Addr:    config.Addr,