package com.osglab.account.config

import io.ktor.server.config.MapApplicationConfig
import io.kotest.assertions.throwables.shouldThrow
import io.kotest.core.spec.style.FunSpec
import io.kotest.matchers.shouldBe
import io.kotest.matchers.string.shouldContain
import java.util.Base64

class AppConfigTest : FunSpec({
    test("test configuration can be injected without Apple client credentials") {
        val config = AppConfig.from(validConfig("test"))

        config.environment shouldBe Environment.TEST
        config.apple.clientCredentialsAvailable shouldBe false
        config.encryption.key.size shouldBe 32
        config.credits.signupTrial shouldBe 1_000
        config.credits.referralInviter shouldBe 1_000
        config.credits.referralInvitee shouldBe 1_000
    }

    test("production rejects placeholder secrets") {
        val config = validProductionConfig().apply {
            put("app.session.secret", "replace-with-secret")
        }

        shouldThrow<ConfigValidationException> {
            AppConfig.from(config)
        }
    }

    test("production accepts complete independent configuration") {
        val config = AppConfig.from(validProductionConfig())

        config.environment shouldBe Environment.PRODUCTION
        config.database.username shouldBe "test"
        config.database.migrationUsername shouldBe "test_migrator"
    }

    test("production accepts enabled admin bootstrap with Argon2 PHC hash") {
        val config = validProductionConfig().apply {
            put("app.admin.enabled", "true")
            put("app.admin.bootstrapEnabled", "true")
            put("app.admin.bootstrapOperatorId", "2c031def-4517-4fde-b592-5db3a3eefdf6")
            put("app.admin.bootstrapUsername", "owner")
            put(
                "app.admin.bootstrapPasswordHash",
                "\$argon2id\$v=19\$m=65536,t=3,p=1\$c2FsdHNhbHRzYWx0c2FsdA\$aGFzaGhhc2hoYXNoaGFzaGhhc2hoYXNoaGFzaA",
            )
            put("app.admin.bootstrapTotpSecretBase32", "JBSWY3DPEHPK3PXPJBSWY3DPEHPK3PXP")
        }

        val admin = AppConfig.from(config).admin
        admin.enabled shouldBe true
        admin.bootstrapEnabled shouldBe true
    }

    test("production accepts established admin without bootstrap credentials") {
        val config = validProductionConfig().apply {
            put("app.admin.enabled", "true")
            put("app.admin.bootstrapEnabled", "false")
        }

        val admin = AppConfig.from(config).admin

        admin.enabled shouldBe true
        admin.bootstrapEnabled shouldBe false
        admin.bootstrapTotpSecretBase32 shouldBe null
    }

    test("admin bootstrap cannot be enabled while admin routes are disabled") {
        val config = validProductionConfig().apply {
            put("app.admin.enabled", "false")
            put("app.admin.bootstrapEnabled", "true")
        }

        shouldThrow<IllegalArgumentException> {
            AppConfig.from(config)
        }.message.orEmpty() shouldContain "bootstrapEnabled requires"
    }

    test("StoreKit requires an app identifier and dedicated credit product when enabled") {
        val missingAppId = validProductionConfig().apply {
            put("app.storeKit.enabled", "true")
            put("app.storeKit.products", "500tks:500,1500tks:1500,3000tks:3000")
        }
        shouldThrow<IllegalArgumentException> {
            AppConfig.from(missingAppId)
        }.message.orEmpty() shouldContain "appAppleId is required"

        val enabled = validProductionConfig().apply {
            put("app.storeKit.enabled", "true")
            put("app.storeKit.appAppleId", "6781553267")
            put("app.storeKit.products", "500tks:500,1500tks:1500,3000tks:3000")
        }

        val storeKit = AppConfig.from(enabled).storeKit
        storeKit.enabled shouldBe true
        storeKit.appAppleId shouldBe 6_781_553_267
        storeKit.products.map { it.productId to it.credits } shouldBe listOf(
            "500tks" to 500,
            "1500tks" to 1_500,
            "3000tks" to 3_000,
        )
    }

    test("StoreKit rejects duplicate product mappings") {
        val config = validProductionConfig().apply {
            put("app.storeKit.enabled", "true")
            put("app.storeKit.appAppleId", "6781553267")
            put("app.storeKit.products", "500tks:500,500tks:3000")
        }

        shouldThrow<ConfigValidationException> {
            AppConfig.from(config)
        }.message.orEmpty() shouldContain "duplicate product IDs"
    }

    test("production fails fast when Apple signing credentials are missing") {
        val config = validProductionConfig().apply {
            put("app.apple.keyId", "")
        }

        shouldThrow<ConfigValidationException> {
            AppConfig.from(config)
        }.message.orEmpty() shouldContain "app.apple.keyId"
    }

    test("production rejects monitor-only integrity configuration") {
        val config = validProductionConfig().apply {
            put("app.providers.volcengine.apiKey", "volcengine-key")
            put("app.providers.deepseek.apiKey", "deepseek-key")
            put("app.integrity.enforceDeviceCheck", "false")
            put("app.integrity.enforceAppAttest", "false")
        }

        shouldThrow<IllegalArgumentException> {
            AppConfig.from(config)
        }.message.orEmpty() shouldContain "must enforce both DeviceCheck and App Attest"
    }

    test("production rejects provider endpoints outside the exact host allowlist") {
        val config = validProductionConfig().apply {
            put("app.providers.deepseek.endpoint", "https://127.0.0.1/v1")
        }

        shouldThrow<IllegalArgumentException> {
            AppConfig.from(config)
        }.message.orEmpty() shouldContain "DeepSeek endpoint"
    }

    test("production requires separate migration credentials") {
        val missingMigrator = validProductionConfig().apply {
            put("app.database.migrationUsername", "")
        }
        shouldThrow<ConfigValidationException> {
            AppConfig.from(missingMigrator)
        }.message.orEmpty() shouldContain "app.database.migrationUsername"

        val reusedPassword = validProductionConfig().apply {
            put("app.database.migrationPassword", "database-password")
        }
        shouldThrow<IllegalArgumentException> {
            AppConfig.from(reusedPassword)
        }.message.orEmpty() shouldContain "passwords must be distinct"
    }

    test("production requires independent cryptographic secrets") {
        val config = validProductionConfig().apply {
            put(
                "app.antiAbuse.identityHmacKeyBase64",
                Base64.getEncoder().encodeToString(ByteArray(32) { 7 }),
            )
        }

        shouldThrow<IllegalArgumentException> {
            AppConfig.from(config)
        }.message.orEmpty() shouldContain "must be distinct"
    }

    test("production requires exact public and App Store URLs") {
        val publicUrl = validProductionConfig().apply {
            put("app.publicBaseUrl", "https://account.osglab.com.evil.example")
        }
        shouldThrow<IllegalArgumentException> {
            AppConfig.from(publicUrl)
        }.message.orEmpty() shouldContain "PUBLIC_BASE_URL"

        val appStoreUrl = validProductionConfig().apply {
            put("app.appStoreUrl", "https://apps.apple.com/app/id0000000000")
        }
        shouldThrow<IllegalArgumentException> {
            AppConfig.from(appStoreUrl)
        }.message.orEmpty() shouldContain "APP_STORE_URL"
    }
})

private fun validConfig(environment: String) = MapApplicationConfig(
    "app.environment" to environment,
    "app.database.jdbcUrl" to "jdbc:mysql://localhost:3306/test",
    "app.database.username" to "test",
    "app.database.password" to "database-password",
    "app.database.migrationUsername" to "test_migrator",
    "app.database.migrationPassword" to "migration-password",
    "app.database.maximumPoolSize" to "4",
    "app.session.issuer" to "https://issuer.example",
    "app.session.audience" to "ios-app",
    "app.session.secret" to "01234567890123456789012345678901",
    "app.session.accessMinutes" to "15",
    "app.session.refreshDays" to "30",
    "app.encryption.keyBase64" to Base64.getEncoder().encodeToString(ByteArray(32) { 7 }),
    "app.antiAbuse.identityHmacKeyBase64" to
        Base64.getEncoder().encodeToString(ByteArray(32) { 8 }),
    "app.apple.clientId" to "com.example.app",
    "app.apple.jwksUrl" to "https://appleid.apple.com/auth/keys",
    "app.apple.tokenUrl" to "https://appleid.apple.com/auth/token",
    "app.apple.revokeUrl" to "https://appleid.apple.com/auth/revoke",
    "app.integrity.enforceDeviceCheck" to "false",
    "app.integrity.enforceAppAttest" to "false",
)

private fun validProductionConfig() = validConfig("production").apply {
    put("app.publicBaseUrl", "https://account.osglab.com")
    put("app.inviteBaseUrl", "https://osglab.com/i")
    put("app.appStoreUrl", "https://apps.apple.com/app/id1234567890")
    put("app.apple.teamId", APP_ATTEST_TEAM_ID)
    put("app.apple.keyId", "APPLE_KEY")
    put("app.apple.clientId", APP_ATTEST_BUNDLE_ID)
    put("app.apple.privateKeyPem", "private-key-material")
    put("app.integrity.appleEnvironment", "production")
    put("app.integrity.enforceDeviceCheck", "true")
    put("app.integrity.enforceAppAttest", "true")
    put("app.providers.volcengine.apiKey", "volcengine-key")
    put("app.providers.deepseek.apiKey", "deepseek-key")
}