package io.oxygenhub.android.api

import io.oxygenhub.android.Fixtures

import org.junit.Assert.assertEquals

import org.junit.Assert.assertNull

import org.junit.Assert.assertTrue

import org.junit.Test

class AvatarTest {

    @Test

    fun theHubsIdenticonIsReadIntoItsHueAndCells() {

        // As oxygenhub.io served /avatar/bob (2026-10-25).

        val a = Avatar.parse("image/svg+xml", Fixtures.text("identicon-bob.svg").toByteArray()) as Avatar.Identicon

        assertEquals(196, a.hue)

        assertEquals(16, a.cells.size)

        assertTrue((3 to 2) in a.cells && (1 to 5) in a.cells && (5 to 5) in a.cells)

        // Every cell has its mirror image, as the hub draws them.

        for ((x, y) in a.cells) assertTrue("($x,$y) has no mirror", (6 - x to y) in a.cells)

    }

    @Test

    fun anUploadedPictureIsKeptAsItCame() {

        val png = byteArrayOf(0x89.toByte(), 0x50, 0x4E, 0x47)

        val a = Avatar.parse("image/png", png) as Avatar.Picture

        assertTrue(a.bytes.contentEquals(png))

        assertTrue(Avatar.parse("image/jpeg; charset=binary", png) is Avatar.Picture)

    }

    @Test

    fun whatTheAppCannotDrawIsNoAvatar() {

        // A system account's own mark is SVG, but not the identicon.

        assertNull(Avatar.parse("image/svg+xml", "<svg><circle r=\"3\"/></svg>".toByteArray()))

        assertNull(Avatar.parse("text/html", "<html>".toByteArray()))

        assertNull(Avatar.parse(null, ByteArray(3)))

        assertNull(Avatar.parse("image/png", ByteArray(0)))

    }

}