package service

import (
	"me-fit/types"
	"me-fit/utils"

	"database/sql"
	"testing"

	"github.com/google/uuid"
)

func mustSetup(t *testing.T) *sql.DB {
	db, err := sql.Open("sqlite3", ":memory:")
	if err != nil {
		t.Fatalf("Could not open Database data.db: %v", err)
	}
	utils.MustRunMigrationsTest(db, "../")
	return db
}

func TestGetUserFromSessionIfSessionNotExpired(t *testing.T) {
	db := mustSetup(t)
	defer db.Close()

	expected := types.NewUser(uuid.New(), "email", "session_id", true)

	db.Exec(`INSERT INTO user (
			user_uuid, email, email_verified,	email_verified_at,
			is_admin,	password,	salt,	created_at)
		VAlUES (
			?, ?, 1, datetime(), 
			0, "password", "salt", datetime())`, expected.Id, expected.Email)
	db.Exec(`INSERT INTO session (session_id, user_uuid, created_at) VALUES (?, ?, datetime('now', '-2 hour'))`, expected.SessionId, expected.Id)

	actual := GetUserFromSessionId(db, expected.SessionId)

	if *actual != *expected {
		t.Errorf("Expected %v, got %v", *expected, *actual)
	}
}

func TestGetUserFromSessionIfSessionInFuture(t *testing.T) {
	db := mustSetup(t)
	defer db.Close()

	expected := types.NewUser(uuid.New(), "email", "session_id", true)

	db.Exec(`INSERT INTO user (
			user_uuid, email, email_verified,	email_verified_at,
			is_admin,	password,	salt,	created_at)
		VAlUES (
			?, ?, 1, datetime(), 
			0, "password", "salt", datetime())`, expected.Id, expected.Email)
	db.Exec(`INSERT INTO session (session_id, user_uuid, created_at) VALUES (?, ?, datetime('now', '+2 hour'))`, expected.SessionId, expected.Id)

	actual := GetUserFromSessionId(db, expected.SessionId)

	if *actual != *expected {
		t.Errorf("Expected %v, got %v", *expected, *actual)
	}
}

func TestFailGetUserFromSessionIfSessionExpired(t *testing.T) {
	db := mustSetup(t)
	defer db.Close()

	expected := types.NewUser(uuid.New(), "email", "session_id", true)

	db.Exec(`INSERT INTO user (
			user_uuid, email, email_verified,	email_verified_at,
			is_admin,	password,	salt,	created_at)
		VAlUES (
			?, ?, 1, datetime(), 
			0, "password", "salt", datetime())`, expected.Id, expected.Email)
	db.Exec(`INSERT INTO session (session_id, user_uuid, created_at) VALUES (?, ?, datetime('now', '-8 hour', '-1 minute'))`, expected.SessionId, expected.Id)

	actual := GetUserFromSessionId(db, expected.SessionId)

	if actual != nil {
		t.Errorf("Expected nil, got %v", *actual)
	}
}

func TestGetUserFromSessionShouldFindCorrectUserBySessionId(t *testing.T) {
	db := mustSetup(t)
	defer db.Close()

	expected := types.NewUser(uuid.New(), "email", "session_id", true)
	userId2 := uuid.New()

	db.Exec(`INSERT INTO user (
			user_uuid, email, email_verified,	email_verified_at,
			is_admin,	password,	salt,	created_at)
		VAlUES (
			?, ?, 1, datetime(), 
			0, "password", "salt", datetime()),
		( 
			?, ?, 1, datetime(), 
			0, "password", "salt", datetime())
			`, expected.Id, expected.Email, userId2, "email2")
	db.Exec(`
		INSERT INTO session (
			session_id, user_uuid, created_at) 
		VALUES 
			(?, ?, datetime('now')),
			(?, ?, datetime('now'))
			`, expected.SessionId, expected.Id, expected.SessionId+"x", userId2)

	actual := GetUserFromSessionId(db, expected.SessionId)

	if *actual != *expected {
		t.Errorf("Expected %v, got %v", *expected, *actual)
	}
}

func TestValidPasswords(t *testing.T) {
	passwords := []string{
		"aB!'2d2y", //normal
		"v-#:j`fQurudEEUk#xA)uzI-B+'eZW3`F*5Eaf+{YID#PWuD.TbyH'f<MC)Ck$!]K[K6~dIN&R'mRaKO,qpDpP'*A!/}73=ilK_COqM/Q%!(hyS8V75e2@J2k223T`tv", // 128 characters
		`aB!"'2d2y`, // include " in password
	}

	for _, password := range passwords {

		err := checkPassword(password)
		if err != nil {
			t.Errorf("Expected nil, got error")
		}
	}
}
func TestInvalidPasswords(t *testing.T) {
	passwords := []string{
		"aB!'2d2",   // too short
		"",          // empty
		"ab123SSa",  // no special character
		"passwor1!", // no uppercase
		"PASSWOR1!", // no lowercase
		"Password!", // no number
		"Password1", // no special character
	}

	for _, password := range passwords {

		err := checkPassword(password)
		if err == nil {
			t.Errorf("Expected error, got nil")
		}
	}
}