package dev.coph.nextusweb.server.websocket;

import org.junit.jupiter.api.Test;

import java.time.Duration;

import static org.junit.jupiter.api.Assertions.*;

class WebSocketConfigTest {

    @Test
    void defaultsHasExpectedValues() {
        WebSocketConfig c = WebSocketConfig.defaults();
        assertEquals(65_536, c.maxFramePayloadLength());
        assertEquals(1_048_576, c.maxAggregatedMessageSize());
        assertEquals(Duration.ofSeconds(60), c.idleTimeout());
        assertFalse(c.allowAnyOrigin());
        assertTrue(c.allowedOrigins().isEmpty());
        assertNull(c.subprotocolsCsv());
        assertTrue(c.compression());
        assertFalse(c.checkStartsWith());
    }

    @Test
    void isOriginAllowedRespectsList() {
        WebSocketConfig c = WebSocketConfig.builder()
                .allowedOrigins("https://a", "https://b")
                .build();
        assertTrue(c.isOriginAllowed("https://a"));
        assertTrue(c.isOriginAllowed("https://b"));
        assertFalse(c.isOriginAllowed("https://c"));
        assertFalse(c.isOriginAllowed(null));
    }

    @Test
    void anyOriginAllowsEverythingExceptNullCheck() {
        WebSocketConfig c = WebSocketConfig.builder().anyOrigin().build();
        assertTrue(c.allowAnyOrigin());
        assertTrue(c.isOriginAllowed("https://anything"));
        assertTrue(c.isOriginAllowed(null));
    }

    @Test
    void invalidFramePayloadLengthRejected() {
        assertThrows(IllegalArgumentException.class,
                () -> WebSocketConfig.builder().maxFramePayloadLength(0));
    }

    @Test
    void invalidAggregatedMessageSizeRejected() {
        assertThrows(IllegalArgumentException.class,
                () -> WebSocketConfig.builder().maxAggregatedMessageSize(0));
    }

    @Test
    void noIdleTimeoutSetsNull() {
        WebSocketConfig c = WebSocketConfig.builder().noIdleTimeout().build();
        assertNull(c.idleTimeout());
    }

    @Test
    void subprotocolsCsvJoins() {
        WebSocketConfig c = WebSocketConfig.builder().subprotocols("a", "b").build();
        String csv = c.subprotocolsCsv();
        assertNotNull(csv);
        assertTrue(csv.contains("a"));
        assertTrue(csv.contains("b"));
    }

    @Test
    void compressionAndCheckStartsWithFlags() {
        WebSocketConfig c = WebSocketConfig.builder()
                .compression(false)
                .checkStartsWith(true)
                .build();
        assertFalse(c.compression());
        assertTrue(c.checkStartsWith());
    }
}