qa: Use gin

qa/api/exercice.go

@@ -1,36 +1,58 @@
 package api
 
 import (
+	"fmt"
+	"log"
+	"net/http"
 	"strconv"
 
 	"srs.epita.fr/fic-server/libfic"
 
-	"github.com/julienschmidt/httprouter"
+	"github.com/gin-gonic/gin"
 )
 
-func init() {
-	router.GET("/api/exercices/", apiHandler(listExercices))
+func declareExercicesRoutes(router *gin.RouterGroup) {
+	router.GET("/exercices", listExercices)
 
-	router.GET("/api/exercices/:eid", apiHandler(exerciceHandler(showExercice)))
+	exercicesRoutes := router.Group("/exercices/:eid")
+	exercicesRoutes.Use(exerciceHandler)
+	exercicesRoutes.GET("", showExercice)
 }
 
-func exerciceHandler(f func(QAUser, *fic.Exercice, []byte) (interface{}, error)) func(QAUser, httprouter.Params, []byte) (interface{}, error) {
-	return func(u QAUser, ps httprouter.Params, body []byte) (interface{}, error) {
-		if eid, err := strconv.ParseInt(string(ps.ByName("eid")), 10, 64); err != nil {
-			return nil, err
-		} else if exercice, err := fic.GetExercice(eid); err != nil {
-			return nil, err
-		} else {
-			return f(u, exercice, body)
+func exerciceHandler(c *gin.Context) {
+	var exercice *fic.Exercice
+	if eid, err := strconv.ParseInt(string(c.Param("eid")), 10, 64); err != nil {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"errmsg": "Bad exercice identifier."})
+		return
+	} else if exercice, err = fic.GetExercice(eid); err != nil {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{"errmsg": "Exercice not found."})
+		return
+	}
+
+	if th, ok := c.Get("theme"); ok {
+		if exercice.IdTheme != th.(*fic.Theme).Id {
+			c.AbortWithStatusJSON(http.StatusNotFound, gin.H{"errmsg": "Exercice not found."})
+			return
 		}
 	}
+
+	c.Set("exercice", exercice)
+
+	c.Next()
 }
 
-func listExercices(_ QAUser, _ httprouter.Params, body []byte) (interface{}, error) {
+func listExercices(c *gin.Context) {
 	// List all exercices
-	return fic.GetExercices()
+	exercices, err := fic.GetExercices()
+	if err != nil {
+		log.Println("Unable to GetExercices: ", err.Error())
+		c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": fmt.Sprintf("Unable to list exercices: %s", err.Error())})
+		return
+	}
+
+	c.JSON(http.StatusOK, exercices)
 }
 
-func showExercice(_ QAUser, exercice *fic.Exercice, body []byte) (interface{}, error) {
-	return exercice, nil
+func showExercice(c *gin.Context) {
+	c.JSON(http.StatusOK, c.MustGet("exercice"))
 }