#include "validation.h"
#include <gtest/gtest.h>

using namespace radiantwave::validation;

TEST(ValidationTest, ValidEmails) {
    EXPECT_TRUE(isValidEmail("user@example.com"));
    EXPECT_TRUE(isValidEmail("first.last@example.co.uk"));
    EXPECT_TRUE(isValidEmail("user+tag@example.com"));
    EXPECT_TRUE(isValidEmail("UPPER.CASE@EXAMPLE.ORG"));
    EXPECT_TRUE(isValidEmail("a@b.co"));
}

TEST(ValidationTest, InvalidEmails) {
    EXPECT_FALSE(isValidEmail(""));
    EXPECT_FALSE(isValidEmail("ab"));
    EXPECT_FALSE(isValidEmail("user@"));
    EXPECT_FALSE(isValidEmail("@example.com"));
    EXPECT_FALSE(isValidEmail("user@@example.com"));
    EXPECT_FALSE(isValidEmail("user@example"));            // no dot in domain
    EXPECT_FALSE(isValidEmail("user name@example.com"));   // whitespace
    EXPECT_FALSE(isValidEmail("user@.example.com"));       // empty label
    EXPECT_FALSE(isValidEmail("user@example..com"));       // empty label
    EXPECT_FALSE(isValidEmail(".user@example.com"));       // leading dot in local
    EXPECT_FALSE(isValidEmail("user.@example.com"));       // trailing dot in local
    EXPECT_FALSE(isValidEmail(std::string(255, 'a') + "@example.com"));
}

TEST(ValidationTest, SanitizeLicenseKey) {
    EXPECT_EQ(sanitizeLicenseKey(""), "");
    EXPECT_EQ(sanitizeLicenseKey("abcd-efgh-1234-5678"), "ABCDEFGH12345678");
    EXPECT_EQ(sanitizeLicenseKey("ab cd ef gh ij kl"), "ABCDEFGHIJKL"); // whitespace stripped
    EXPECT_EQ(sanitizeLicenseKey("AbC1!!dEf"), "ABC1DEF");              // symbols stripped
    EXPECT_EQ(sanitizeLicenseKey("12345678901234567890"), "1234567890123456"); // capped at 16
}

TEST(ValidationTest, FormatLicenseKey) {
    EXPECT_EQ(formatLicenseKey(""), "");
    EXPECT_EQ(formatLicenseKey("ABCD"), "ABCD");
    EXPECT_EQ(formatLicenseKey("ABCDEFGH"), "ABCD-EFGH");
    EXPECT_EQ(formatLicenseKey("ABCDEFGH12345678"), "ABCD-EFGH-1234-5678");
    // Grouping applies to whatever is passed; length capping is the
    // sanitizer's responsibility.
    EXPECT_EQ(formatLicenseKey("ABCDEFGH123456789"), "ABCD-EFGH-1234-5678-9");
}