started working on the backend

backend/pkg/db/assignments/assignments.go

@@ -0,0 +1,30 @@
+package assignments
+
+import (
+	"github.com/johannesbuehl/golunteer/backend/pkg/db"
+)
+
+type assignments map[string]string
+
+type assignemntDB struct {
+	TaskName string `db:"taskName"`
+	UserName string `db:"userName"`
+}
+
+func Event(eventID int) (assignments, error) {
+	// get the assignments from the database
+	var assignmentRows []assignemntDB
+
+	if err := db.DB.Select(&assignmentRows, "SELECT USERS.name AS userName, TASKS.text AS taskName FROM USER_ASSIGNMENTS JOIN USERS ON USER_ASSIGNMENTS.userName = USERS.name LEFT JOIN TASKS ON USER_ASSIGNMENTS.taskID = TASKS.id WHERE USER_ASSIGNMENTS.eventID = ?", eventID); err != nil {
+		return nil, err
+	} else {
+		// transform the rows into the returned map
+		eventAssignments := assignments{}
+
+		for _, assignment := range assignmentRows {
+			eventAssignments[assignment.TaskName] = assignment.UserName
+		}
+
+		return eventAssignments, nil
+	}
+}