package postgres

import (
	"context"
	"os"
	"testing"
	"time"

	"github.com/jackc/pgx/v5/pgxpool"

	"knowledge-governance/internal/governance"
)

func TestUISettingsActivationRetiresPreviousRevisionIntegration(t *testing.T) {
	databaseURL := isolatedIntegrationDatabaseURL(t, os.Getenv("TEST_DATABASE_URL"))
	if databaseURL == "" {
		t.Skip("TEST_DATABASE_URL is not set")
	}
	ctx := context.Background()
	pool, err := pgxpool.New(ctx, databaseURL)
	if err != nil {
		t.Fatal(err)
	}
	defer pool.Close()
	if err := ApplyMigrations(ctx, pool); err != nil {
		t.Fatal(err)
	}
	store := NewStore(pool)
	previous, err := store.GetActiveUISettings(ctx)
	if err != nil || previous.ID != "settings-default" {
		t.Fatalf("previous=%#v error=%v", previous, err)
	}
	now := time.Date(2026, 9, 10, 7, 0, 0, 0, time.UTC)
	candidate, err := store.CreateUISettingsCandidate(ctx, governance.CreateUISettingsCandidateRequest{DocumentRefreshSeconds: 30, ResourceRefreshSeconds: 60, StalledAfterSeconds: 3600, FinalizingAfterSeconds: 14400, IngestionConcurrency: 2, UpdatedBy: "engineer-1", Now: now})
	if err != nil {
		t.Fatal(err)
	}
	active, err := store.ActivateUISettings(ctx, candidate.ID, now.Add(time.Second))
	if err != nil || active.ID != candidate.ID || active.State != "active" || active.ActivatedAt == nil {
		t.Fatalf("active=%#v error=%v", active, err)
	}
	again, err := store.ActivateUISettings(ctx, candidate.ID, now.Add(2*time.Second))
	if err != nil || again.ID != candidate.ID || again.State != "active" {
		t.Fatalf("again=%#v error=%v", again, err)
	}
	var state string
	var retiredAt *time.Time
	if err := pool.QueryRow(ctx, `SELECT state,retired_at FROM ui_setting_revisions WHERE id=$1`, previous.ID).Scan(&state, &retiredAt); err != nil || state != "retired" || retiredAt == nil {
		t.Fatalf("previous state=%q retiredAt=%v error=%v", state, retiredAt, err)
	}
}