Added multiple folders & files. Added migration folders

.gitignore

@@ -22,3 +22,13 @@ dist-ssr
 *.njsproj
 *.sln
 *.sw?
+
+# Backend local dataset & media caches (ETL)
+server/data/raw/*
+!server/data/raw/.gitkeep
+
+server/data/covers/*
+!server/data/covers/.gitkeep
+
+# Environment variables
+.env

package.json

@@ -16,7 +16,7 @@
   "devDependencies": {
     "@eslint/js": "^10.0.1",
     "@types/node": "^24.13.3",
-    "@types/react": "^19.2.18",
+    "@types/react": "^19.3.0",
     "@types/react-dom": "^19.2.7",
     "@vitejs/plugin-react": "^6.1.1",
     "eslint": "^10.10.0",

server/src/database/migrations/schema.sql

@@ -0,0 +1,76 @@
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+CREATE EXTENSION IF NOT EXISTS pg_trgm;
+
+-- album-tabell
+CREATE TABLE IF NOT EXISTS albums (
+    id VARCHAR(64) PRIMARY KEY, -- MusicBrainz release-group MBID
+    title VARCHAR(255) NOT NULL,
+    artist VARCHAR(255) NOT NULL,
+    release_year INT NOT NULL,
+    cover_url TEXT,
+);
+
+-- sjangre (mange-til-mange relasjon)
+CREATE TABLE IF NOT EXISTS genres (
+    id SERIAL PRIMARY KEY,
+    name VARCHAR(100) UNIQUE NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS album_genres (
+    album_id VARCHAR(64) REFERENCES albums(id) ON DELETE CASCADE,
+    genre_id INT REFERENCES genres(id) ON DELETE CASCADE,
+    PRIMARY KEY (album_id, genre_id)
+);
+
+-- tracks-tabell (en-til-mange: et album har mange spor)
+CREATE TABLE IF NOT EXISTS tracks (
+    id SERIAL PRIMARY KEY,
+    album_id VARCHAR(64) NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
+    position INT NOT NULL,
+    title VARCHAR(255) NOT NULL,
+    duration VARCHAR(50) NOT NULL, -- f.eks. "3:45" eller millisekunder
+);
+
+-- reviews and ratings (for UI innhold)
+CREATE TABLE IF NOT EXISTS reviews (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    album_id VARCHAR(64) NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
+    user_name VARCHAR(100) NOT NULL DEFAULT 'Anonym',
+    rating INT NOT NULL CHECK (rating >= 1 AND rating <= 5),
+    comment TEXT,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- for collections/favs for brukere
+DO $$ BEGIN
+    CREATE TYPE collection_type_enum AS ENUM ('favorites', 'has_cd', 'wants_cd');
+EXCEPTION
+    WHEN duplicate_object THEN null;
+END $$;
+
+CREATE TABLE IF NOT EXISTS user_collections (
+    user_id VARCHAR(255) NOT NULL,
+    album_id VARCHAR(64) REFERENCES albums(id) ON DELETE CASCADE,
+    collection_type collection_type_enum NOT NULL,
+    added_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (user_id, album_id, collection_type)
+);
+
+
+-- INDEKSER FOR HØY YTELSE (Søk, filtrering, sortering og paginering)
+
+-- Indeks for tekstsøk på tittel og artist 
+CREATE INDEX IF NOT EXISTS idx_albums_title_trgm ON albums USING gin (title gin_trgm_ops);
+CREATE INDEX IF NOT EXISTS idx_albums_artist_trgm ON albums USING gin (artist gin_trgm_ops);
+
+-- Indeks for sortering på utgivelsesår
+CREATE INDEX IF NOT EXISTS idx_albums_decade ON albums ((release_year / 10 * 10));
+
+-- Indeks for hurtigoppslag på spor per album
+CREATE INDEX IF NOT EXISTS idx_tracks_album_id ON tracks(album_id);
+
+-- Indeks for anmeldelser per album
+CREATE INDEX IF NOT EXISTS idx_reviews_album_id ON reviews(album_id);
+
+
+

server/src/database/migrations/seed.sql

@@ -0,0 +1,30 @@
+-- Labels
+INSERT INTO labels (id, name) VALUES (1, 'Columbia Records'), (2, 'Harvest Records') ON CONFLICT DO NOTHING;
+
+-- Albumer
+INSERT INTO albums (id, title, artist, release_year, cover_path, label_id) VALUES
+('mbid-1', 'Abbey Road', 'The Beatles', 1969, '/covers/abbey-road.webp', 1),
+('mbid-2', 'The Dark Side of the Moon', 'Pink Floyd', 1973, '/covers/dark-side.webp', 2),
+('mbid-3', 'Thriller', 'Michael Jackson', 1982, '/covers/thriller.webp', 1),
+('mbid-4', 'Back in Black', 'AC/DC', 1980, '/covers/back-in-black.webp', 1)
+ON CONFLICT DO NOTHING;
+
+-- Sjangre
+INSERT INTO genres (id, name) VALUES (1, 'Rock'), (2, 'Progressive Rock'), (3, 'Pop') ON CONFLICT DO NOTHING;
+
+-- Koble albumer og sjangre
+INSERT INTO album_genres (album_id, genre_id) VALUES 
+('mbid-1', 1),
+('mbid-2', 1),
+('mbid-2', 2),
+('mbid-3', 3),
+('mbid-4', 1)
+ON CONFLICT DO NOTHING;
+
+-- Sporliste (Task 6)
+INSERT INTO tracks (album_id, title, duration_ms, track_number) VALUES
+('mbid-1', 'Come Together', 259000, 1),
+('mbid-1', 'Something', 182000, 2),
+('mbid-2', 'Speak to Me', 67000, 1),
+('mbid-2', 'Breathe', 163000, 2)
+ON CONFLICT DO NOTHING;

server/src/graphQL/typeDefs.ts

@@ -0,0 +1,65 @@
+export const typeDefs = `#graphql
+  type Label {
+    id: ID!
+    name: String!
+  }
+
+  type Track {
+    id: ID!
+    title: String!
+    durationMs: Int
+    trackNumber: Int!
+  }
+
+  type Album {
+    id: ID!
+    title: String!
+    artist: String!
+    releaseYear: Int!
+    coverPath: String
+    label: Label
+    genres: [String!]!
+    tracks: [Track!]!
+  }
+
+  type PageInfo {
+    endCursor: String
+    hasNextPage: Boolean!
+  }
+
+  type AlbumEdge {
+    cursor: String!
+    node: Album!
+  }
+
+  type AlbumConnection {
+    edges: [AlbumEdge!]!
+    pageInfo: PageInfo!
+    totalCount: Int!
+  }
+
+  enum SortOption {
+    TITLE_ASC
+    TITLE_DESC
+    YEAR_ASC
+    YEAR_DESC
+  }
+
+  type Query {
+    # Task 2 & 5: Paginert søk, filtrering på sjanger, tiår og sortering
+    albums(
+      search: String
+      genre: String
+      decade: Int
+      sortBy: SortOption
+      first: Int = 10
+      after: String
+    ): AlbumConnection!
+
+    # Task 6: Detaljspørring for enkeltalbum
+    album(id: ID!): Album
+
+    # Hente alle sjangre for filter-dropdown i frontend
+    genres: [String!]!
+  }
+`;