v0.1.0 — Phase 1: Go Backend + SQLite + Seed Data

- Wails project setup (Go + React-TS) - SQLite schema (allergens, additives, products, week_plans, plan_entries, special_days) - 14 EU allergens (LMIV 1169/2011) - 24 German food additives - 99 products imported from Excel with allergen/additive mappings - Full Wails bindings (CRUD for products, week plans, entries, special days) - OTA updater stub (version check against HTTPS endpoint) - Pure Go SQLite (no CGO) for easy Windows cross-compilation
2026-02-20 09:59:36 +00:00
commit c19483ea81
39 changed files with 5638 additions and 0 deletions
--- a/db.go
+++ b/db.go
@@ -0,0 +1,127 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/jmoiron/sqlx"
+	_ "modernc.org/sqlite"
+)
+
+var db *sqlx.DB
+
+// InitDatabase initialisiert die SQLite-Datenbank
+func InitDatabase() error {
+	// DB-Datei im User-Home-Verzeichnis
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return fmt.Errorf("failed to get user home directory: %w", err)
+	}
+
+	dbPath := filepath.Join(homeDir, "speiseplan.db")
+	
+	// Verbindung zur Datenbank herstellen
+	database, err := sqlx.Open("sqlite", dbPath)
+	if err != nil {
+		return fmt.Errorf("failed to open database: %w", err)
+	}
+
+	db = database
+
+	// Schema erstellen
+	if err := createSchema(); err != nil {
+		return fmt.Errorf("failed to create schema: %w", err)
+	}
+
+	// Seed-Daten einfügen
+	if err := SeedDatabase(); err != nil {
+		return fmt.Errorf("failed to seed database: %w", err)
+	}
+
+	return nil
+}
+
+// createSchema erstellt das Datenbankschema
+func createSchema() error {
+	schema := `
+	-- 14 EU-Allergene (gesetzlich vorgeschrieben, LMIV Verordnung)
+	CREATE TABLE IF NOT EXISTS allergens (
+		id TEXT PRIMARY KEY,
+		name TEXT NOT NULL,
+		category TEXT NOT NULL DEFAULT 'allergen'
+	);
+
+	-- Zusatzstoffe (deutsche Lebensmittelkennzeichnung)
+	CREATE TABLE IF NOT EXISTS additives (
+		id TEXT PRIMARY KEY,
+		name TEXT NOT NULL
+	);
+
+	-- Produkte
+	CREATE TABLE IF NOT EXISTS products (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		name TEXT NOT NULL UNIQUE,
+		multiline BOOLEAN DEFAULT FALSE
+	);
+
+	-- Produkt-Allergen-Zuordnung (n:m)
+	CREATE TABLE IF NOT EXISTS product_allergens (
+		product_id INTEGER REFERENCES products(id) ON DELETE CASCADE,
+		allergen_id TEXT REFERENCES allergens(id),
+		PRIMARY KEY (product_id, allergen_id)
+	);
+
+	-- Produkt-Zusatzstoff-Zuordnung (n:m)
+	CREATE TABLE IF NOT EXISTS product_additives (
+		product_id INTEGER REFERENCES products(id) ON DELETE CASCADE,
+		additive_id TEXT REFERENCES additives(id),
+		PRIMARY KEY (product_id, additive_id)
+	);
+
+	-- Wochenpläne
+	CREATE TABLE IF NOT EXISTS week_plans (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		year INTEGER NOT NULL,
+		week INTEGER NOT NULL,
+		created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+		UNIQUE(year, week)
+	);
+
+	-- Einträge im Wochenplan
+	CREATE TABLE IF NOT EXISTS plan_entries (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		week_plan_id INTEGER REFERENCES week_plans(id) ON DELETE CASCADE,
+		day INTEGER NOT NULL,
+		meal TEXT NOT NULL,
+		slot INTEGER NOT NULL DEFAULT 0,
+		product_id INTEGER REFERENCES products(id),
+		custom_text TEXT,
+		group_label TEXT
+	);
+
+	-- Sondertage
+	CREATE TABLE IF NOT EXISTS special_days (
+		id INTEGER PRIMARY KEY AUTOINCREMENT,
+		week_plan_id INTEGER REFERENCES week_plans(id) ON DELETE CASCADE,
+		day INTEGER NOT NULL,
+		type TEXT NOT NULL,
+		label TEXT
+	);`
+
+	_, err := db.Exec(schema)
+	return err
+}
+
+// GetDB gibt die Datenbankverbindung zurück
+func GetDB() *sqlx.DB {
+	return db
+}
+
+// CloseDatabase schließt die Datenbankverbindung
+func CloseDatabase() error {
+	if db != nil {
+		return db.Close()
+	}
+	return nil
+}