package com.peachpasswords.passkeys

import com.peachpasswords.vault.PasskeyData
import com.peachpasswords.vault.VaultEntry
import org.junit.Assert.assertEquals
import org.junit.Assert.assertTrue
import org.junit.Test

class PasskeyCredentialPlannerTest {
    @Test fun matches_passkeys_by_exact_rp_id() {
        val matches = PasskeyCredentialPlanner.candidates(
            listOf(
                passkey("a", rpId = "example.com", username = "june"),
                passkey("b", rpId = "evil-example.com", username = "lookalike"),
            ),
            """{"challenge":"c","rpId":"example.com"}""",
        )

        assertEquals(listOf("a"), matches.map { it.entryId })
        assertEquals("june", matches.single().username)
    }

    @Test fun narrows_to_allow_credentials_when_present() {
        val matches = PasskeyCredentialPlanner.candidates(
            listOf(
                passkey("a", credentialId = "cred-a", lastUsedAt = 10),
                passkey("b", credentialId = "cred-b", lastUsedAt = 20),
            ),
            """{"challenge":"c","rpId":"example.com","allowCredentials":[{"type":"public-key","id":"cred-a"}]}""",
        )

        assertEquals(listOf("a"), matches.map { it.entryId })
    }

    @Test fun empty_or_invalid_requests_offer_no_credentials() {
        assertTrue(PasskeyCredentialPlanner.candidates(listOf(passkey("a")), """{"challenge":"c"}""").isEmpty())
        assertTrue(PasskeyCredentialPlanner.candidates(listOf(passkey("a")), "not-json").isEmpty())
    }

    private fun passkey(
        id: String,
        rpId: String = "example.com",
        credentialId: String = "cred-$id",
        username: String = "user-$id",
        lastUsedAt: Long? = null,
    ) = VaultEntry(
        id = id,
        type = "passkey",
        title = "Passkey $id",
        passkey = PasskeyData(
            credentialId = credentialId,
            publicKeyCose = "cose-$id",
            rpId = rpId,
            userHandle = "handle-$id",
            userName = username,
            userDisplayName = "User $id",
        ),
        lastUsedAt = lastUsedAt,
        createdAt = 1,
        modifiedAt = 1,
    )
}