package store_test

import (
	"context"
	"database/sql"
	"testing"
	"time"

	"github.com/wangjia/pangolin/server/internal/sessions"
)

// seedUserDevice inserts a user + device so sessions FKs are satisfiable.
func seedUserDevice(t *testing.T, db *sql.DB, userID, deviceID int64) {
	t.Helper()
	if _, err := db.Exec(
		`INSERT INTO users (id, uuid, email, pw_hash, dp_uuid, status) VALUES (?,?,?,?,?,?)`,
		userID, "u-uuid", "u@example.com", "h", "dp-uuid", "active"); err != nil {
		t.Fatalf("seed user: %v", err)
	}
	if _, err := db.Exec(
		`INSERT INTO devices (id, uuid, user_id, name, platform) VALUES (?,?,?,?,?)`,
		deviceID, "d-uuid", userID, "MacBook", "macos"); err != nil {
		t.Fatalf("seed device: %v", err)
	}
}

func TestSQLite_Sessions_CreateRotateRevoke(t *testing.T) {
	ctx := context.Background()
	db := openSQLite(t)
	seedUserDevice(t, db, 1, 10)
	ss := sessions.NewStore(db)

	if err := ss.Create(ctx, 1, 10, "jti-1", "1.2.3.4", "v1.0.10"); err != nil {
		t.Fatalf("Create: %v", err)
	}
	var jti, ver, ip string
	var revoked sql.NullTime
	if err := db.QueryRow(
		`SELECT refresh_jti, client_version, client_ip, revoked_at FROM sessions WHERE user_id=1`,
	).Scan(&jti, &ver, &ip, &revoked); err != nil {
		t.Fatalf("read: %v", err)
	}
	if jti != "jti-1" || ver != "v1.0.10" || ip != "1.2.3.4" || revoked.Valid {
		t.Fatalf("bad session: jti=%s ver=%s ip=%s revoked=%v", jti, ver, ip, revoked.Valid)
	}

	// Rotate jti-1 → jti-2.
	if err := ss.Rotate(ctx, "jti-1", "jti-2"); err != nil {
		t.Fatalf("Rotate: %v", err)
	}
	var cnt int
	db.QueryRow(`SELECT COUNT(*) FROM sessions WHERE refresh_jti='jti-2' AND revoked_at IS NULL`).Scan(&cnt)
	if cnt != 1 {
		t.Fatalf("rotate did not move jti: cnt=%d", cnt)
	}

	// Revoke jti-2.
	if err := ss.Revoke(ctx, "jti-2"); err != nil {
		t.Fatalf("Revoke: %v", err)
	}
	db.QueryRow(`SELECT COUNT(*) FROM sessions WHERE refresh_jti='jti-2' AND revoked_at IS NOT NULL`).Scan(&cnt)
	if cnt != 1 {
		t.Fatalf("revoke did not set revoked_at")
	}
}

func TestSQLite_Sessions_RevokeByDevice(t *testing.T) {
	ctx := context.Background()
	db := openSQLite(t)
	seedUserDevice(t, db, 1, 10)
	ss := sessions.NewStore(db)

	for _, j := range []string{"a", "b", "c"} {
		if err := ss.Create(ctx, 1, 10, j, "", ""); err != nil {
			t.Fatalf("create %s: %v", j, err)
		}
	}
	// Pre-revoke one so it isn't returned/double-counted.
	if err := ss.Revoke(ctx, "c"); err != nil {
		t.Fatalf("pre-revoke: %v", err)
	}

	jtis, err := ss.RevokeByDevice(ctx, 1, 10)
	if err != nil {
		t.Fatalf("RevokeByDevice: %v", err)
	}
	if len(jtis) != 2 {
		t.Fatalf("expected 2 active jtis revoked, got %v", jtis)
	}
	var active int
	db.QueryRow(`SELECT COUNT(*) FROM sessions WHERE device_id=10 AND revoked_at IS NULL`).Scan(&active)
	if active != 0 {
		t.Fatalf("device still has %d active sessions", active)
	}
}

func TestSQLite_Sessions_LastLoginByDevice(t *testing.T) {
	ctx := context.Background()
	db := openSQLite(t)
	seedUserDevice(t, db, 1, 10)
	// second device
	db.Exec(`INSERT INTO devices (id, uuid, user_id, name, platform) VALUES (?,?,?,?,?)`,
		20, "d-uuid-2", 1, "iPhone", "ios")

	older := time.Date(2026, 6, 1, 8, 0, 0, 0, time.UTC)
	newer := time.Date(2026, 6, 28, 9, 0, 0, 0, time.UTC)
	// device 10: two logins, newer should win.
	db.Exec(`INSERT INTO sessions (user_id, device_id, refresh_jti, created_at) VALUES (1,10,'o',?)`, older)
	db.Exec(`INSERT INTO sessions (user_id, device_id, refresh_jti, created_at) VALUES (1,10,'n',?)`, newer)
	// device 20: one login.
	db.Exec(`INSERT INTO sessions (user_id, device_id, refresh_jti, created_at) VALUES (1,20,'x',?)`, older)

	ss := sessions.NewStore(db)
	m, err := ss.LastLoginByDevice(ctx, 1)
	if err != nil {
		t.Fatalf("LastLoginByDevice: %v", err)
	}
	if !m[10].Equal(newer) {
		t.Fatalf("device 10 last login = %v, want %v", m[10], newer)
	}
	if !m[20].Equal(older) {
		t.Fatalf("device 20 last login = %v, want %v", m[20], older)
	}
}