From 3cd9f1fdbd9b30a5ed55e426c8b51ffe9be0ce7d Mon Sep 17 00:00:00 2001
From: Elmar Kresse <18119527+masterElmar@users.noreply.github.com>
Date: Wed, 25 Oct 2023 12:00:59 +0200
Subject: [PATCH] feat:#16 added migration for feeds with uuid

---
 backend/Dockerfile                      |  2 +-
 backend/model/icalModel.go              |  7 ++++
 backend/service/addRoute.go             | 18 +++++++++
 backend/service/ical/icalJsonMigrate.go | 54 +++++++++++++++++++++++++
 4 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 backend/service/ical/icalJsonMigrate.go

diff --git a/backend/Dockerfile b/backend/Dockerfile
index 77f2aca..67a9d42 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.5-alpine
+FROM golang:1.21.3-alpine
 
 # Set the Current Working Directory inside the container
 WORKDIR /app
diff --git a/backend/model/icalModel.go b/backend/model/icalModel.go
index 192a528..c8ae765 100644
--- a/backend/model/icalModel.go
+++ b/backend/model/icalModel.go
@@ -27,3 +27,10 @@ type FeedCollection struct {
 	Course          string `db:"course" json:"course"`
 	UserDefinedName string `db:"userDefinedName" json:"userDefinedName"`
 }
+
+type UUIDFeedCollection struct {
+	UUID            string `db:"uuid" json:"uuid"`
+	Name            string `db:"Name" json:"name"`
+	Course          string `db:"course" json:"course"`
+	UserDefinedName string `db:"userDefinedName" json:"userDefinedName"`
+}
diff --git a/backend/service/addRoute.go b/backend/service/addRoute.go
index d5066bf..5a7ad49 100644
--- a/backend/service/addRoute.go
+++ b/backend/service/addRoute.go
@@ -243,4 +243,22 @@ func AddRoutes(app *pocketbase.PocketBase) {
 		}
 		return nil
 	})
+
+	app.OnBeforeServe().Add(func(e *core.ServeEvent) error {
+		_, err := e.Router.AddRoute(echo.Route{
+			Method: http.MethodGet,
+			Path:   "/api/feed/migrate",
+			Handler: func(c echo.Context) error {
+				ical.MigrateFeedJson(app)
+				return c.JSON(200, "Migrated")
+			},
+			Middlewares: []echo.MiddlewareFunc{
+				apis.ActivityLogger(app),
+			},
+		})
+		if err != nil {
+			return err
+		}
+		return nil
+	})
 }
diff --git a/backend/service/ical/icalJsonMigrate.go b/backend/service/ical/icalJsonMigrate.go
new file mode 100644
index 0000000..19f38b4
--- /dev/null
+++ b/backend/service/ical/icalJsonMigrate.go
@@ -0,0 +1,54 @@
+package ical
+
+import (
+	"encoding/json"
+	"github.com/pocketbase/dbx"
+	"github.com/pocketbase/pocketbase"
+	"htwkalender/model"
+)
+
+//update ical feed json
+//add uuid field
+//remove module name field
+
+func MigrateFeedJson(app *pocketbase.PocketBase) {
+
+	var feeds []model.Feed
+
+	err := app.Dao().DB().Select("*").From("feed").All(&feeds)
+	if err != nil {
+		return
+	}
+
+	for _, feed := range feeds {
+
+		var modules []model.FeedCollection
+
+		err := json.Unmarshal([]byte(feed.Modules), &modules)
+		if err != nil {
+			return
+		}
+
+		var uuidFeedCollection model.UUIDFeedCollection
+
+		for _, module := range modules {
+			uuid := searchUUIDForModule(app, module.Name)
+
+			if uuid != "" {
+				uuidFeedCollection = model.UUIDFeedCollection{UUID: uuid, Name: module.Name, Course: module.Course, UserDefinedName: module.UserDefinedName}
+				app.Dao().DB().Update("feed", dbx.Params{"modules": uuidFeedCollection}, dbx.NewExp("id = {:id}", dbx.Params{"id": feed.Id}))
+			}
+		}
+
+	}
+
+}
+
+func searchUUIDForModule(app *pocketbase.PocketBase, module string) string {
+	var uuid string
+	err := app.Dao().DB().Select("uuid").From("module").Where(dbx.NewExp("name = {:name}", dbx.Params{"name": module})).One(&uuid)
+	if err != nil {
+		return ""
+	}
+	return uuid
+}