Feature 04 task 4: Default seeding for AI settings and notification preferences (#28)

Co-authored-by: dev_agent <dev_agent@cubecraftlabs.com>
Co-committed-by: dev_agent <dev_agent@cubecraftlabs.com>

internal/household/defaults.go

@@ -0,0 +1,93 @@
+package household
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+
+	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/db"
+	"code.cubecraftlabs.com/Maniacs_Mansion/Meal-Quest/internal/store"
+)
+
+// DefaultPersonaPrompt is the default AI system prompt (CTXD PROMPTS.MD §4).
+// SeedAISettings stores it on first boot and the Admin reset restores it.
+const DefaultPersonaPrompt = `You are MealQuest, a dinner planning assistant for one household. Suggest dinners
+similar to their regular rotation, nudging them to try something a little new each
+week. Prefer weeknight-friendly recipes with common grocery-store ingredients.
+Flag crock pot meals and anything 30 minutes or less as "quick". Keep explanations
+short, warm and specific — mention the household's own regular dinners when you
+explain why something fits. Never suggest a dinner they already make or have
+declined.`
+
+// Seed values for the AI settings (CTXD CONTEXT.MD). The base URL and model
+// are empty until the household picks a provider preset; there is no key.
+const (
+	SeedAIProvider    = "anthropic"
+	SeedAIBaseURL     = ""
+	SeedAIModel       = ""
+	SeedAITemperature = 0.7
+)
+
+// seedNotificationPrefs are the notification preferences for a new
+// household, one per event: push for every event, chat only for the plan
+// and the shopping list.
+var seedNotificationPrefs = []struct {
+	Event      string
+	Push, Chat bool
+}{
+	{Event: "plan_ready", Push: true, Chat: true},
+	{Event: "list_ready", Push: true, Chat: true},
+	{Event: "day_of_reminder", Push: true, Chat: false},
+	{Event: "new_suggestions", Push: true, Chat: false},
+	{Event: "rotation_review", Push: true, Chat: false},
+}
+
+// SeedAISettings creates the AI settings row with the seed values and
+// DefaultPersonaPrompt if it does not exist. An existing row is never
+// changed.
+func SeedAISettings(ctx context.Context, st *store.Store) error {
+	return st.WithTx(ctx, func(tx *sql.Tx) error {
+		q := db.New(tx)
+		_, err := q.GetAISettings(ctx)
+		if err == nil {
+			return nil
+		}
+		if !errors.Is(err, sql.ErrNoRows) {
+			return fmt.Errorf("household: read AI settings: %w", err)
+		}
+		now := store.Now().String()
+		_, err = q.UpsertAISettings(ctx, db.UpsertAISettingsParams{
+			Provider:     SeedAIProvider,
+			BaseUrl:      SeedAIBaseURL,
+			Model:        SeedAIModel,
+			Temperature:  SeedAITemperature,
+			SystemPrompt: sql.NullString{String: DefaultPersonaPrompt, Valid: true},
+			CreatedAt:    now,
+			UpdatedAt:    now,
+		})
+		if err != nil {
+			return fmt.Errorf("household: seed AI settings: %w", err)
+		}
+		return nil
+	})
+}
+
+// SeedNotificationPrefs creates the seed notification preference row of
+// every event that has none. Existing rows are never changed.
+func SeedNotificationPrefs(ctx context.Context, st *store.Store) error {
+	return st.WithTx(ctx, func(tx *sql.Tx) error {
+		now := store.Now().String()
+		for _, p := range seedNotificationPrefs {
+			_, err := tx.ExecContext(ctx,
+				`INSERT INTO notification_prefs (event, push, chat, created_at, updated_at)
+				VALUES (?, ?, ?, ?, ?)
+				ON CONFLICT (event) DO NOTHING`,
+				p.Event, p.Push, p.Chat, now, now)
+			if err != nil {
+				return fmt.Errorf("household: seed notification preference %s: %w", p.Event, err)
+			}
+		}
+		return nil
+	})
+}