package store_test

import (
	"context"
	"os"
	"testing"

	"github.com/netcell-it/deklarix/internal/store"
)

// Diese Tests brauchen eine laufende Postgres-Instanz und werden ohne
// DATABASE_URL übersprungen, statt eine Verbindung vorzutäuschen.
func testDatabaseURL(t *testing.T) string {
	t.Helper()
	url := os.Getenv("DATABASE_URL")
	if url == "" {
		t.Skip("DATABASE_URL nicht gesetzt, überspringe Store-Integrationstest")
	}
	return url
}

func TestMigrateAndOpen(t *testing.T) {
	url := testDatabaseURL(t)

	if err := store.Migrate(url); err != nil {
		t.Fatalf("Migrate: %v", err)
	}

	s, err := store.Open(context.Background(), url)
	if err != nil {
		t.Fatalf("Open: %v", err)
	}
	defer s.Close()

	var tableCount int
	err = s.Pool.QueryRow(context.Background(), `
		SELECT count(*) FROM information_schema.tables
		WHERE table_schema = 'public' AND table_name = ANY($1)
	`, []string{"submission", "asset", "extraction", "finding", "evidence_package", "participant"}).Scan(&tableCount)
	if err != nil {
		t.Fatalf("query tables: %v", err)
	}
	if tableCount != 6 {
		t.Fatalf("expected 6 tables, got %d", tableCount)
	}
}

func TestFindingIsAppendOnly(t *testing.T) {
	url := testDatabaseURL(t)

	if err := store.Migrate(url); err != nil {
		t.Fatalf("Migrate: %v", err)
	}

	s, err := store.Open(context.Background(), url)
	if err != nil {
		t.Fatalf("Open: %v", err)
	}
	defer s.Close()

	ctx := context.Background()

	acc, err := s.CreateAccount(ctx, "Test-Mandant")
	if err != nil {
		t.Fatalf("create account: %v", err)
	}

	var submissionID string
	err = s.Pool.QueryRow(ctx, `
		INSERT INTO submission (account_id, platform, post_type) VALUES ($1, 'instagram', 'reel')
		RETURNING id
	`, acc.ID).Scan(&submissionID)
	if err != nil {
		t.Fatalf("insert submission: %v", err)
	}

	var findingID string
	err = s.Pool.QueryRow(ctx, `
		INSERT INTO finding (submission_id, rule_id, rule_version, severity, title, fix, sources)
		VALUES ($1, 'WK-004', 3, 'hoch', 'Testfeststellung', 'Testkorrektur', '{}')
		RETURNING id
	`, submissionID).Scan(&findingID)
	if err != nil {
		t.Fatalf("insert finding: %v", err)
	}

	_, err = s.Pool.Exec(ctx, `UPDATE finding SET title = 'geändert' WHERE id = $1`, findingID)
	if err == nil {
		t.Fatal("expected UPDATE on finding to be rejected, but it succeeded")
	}
}