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/*
 * Copyright (c) 2021 Touchlab
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package co.touchlab.kermit

import co.touchlab.stately.collections.frozenLinkedList
import kotlin.test.assertEquals
import kotlin.test.assertTrue

@ExperimentalKermitApi
data class TestConfig(
    override val minSeverity: Severity,
    override val logWriterList: List,
) : LoggerConfig

@ExperimentalKermitApi
class TestLogWriter(private val loggable: Severity) : LogWriter() {
    @ExperimentalKermitApi
    data class LogEntry(
        val severity: Severity,
        val message: String,
        val tag: String?,
        val throwable: Throwable?
    )

    @Suppress("DEPRECATION")
    private val _logs = frozenLinkedList()
    val logs: List
        get() = _logs.toList()

    fun assertCount(count: Int) {
        assertEquals(count, _logs.size)
    }

    fun assertLast(check: LogEntry.() -> Boolean) {
        assertTrue(_logs.last().check())
    }

    fun reset() {
        _logs.clear()
    }

    override fun isLoggable(tag: String, severity: Severity): Boolean {
        return severity.ordinal >= loggable.ordinal
    }

    override fun log(severity: Severity, message: String, tag: String, throwable: Throwable?) {
        _logs.add(LogEntry(severity, message, tag, throwable))
    }
}