diff --git a/src/main/kotlin/top/jie65535/jcf/ScheduleHandler.kt b/src/main/kotlin/top/jie65535/jcf/ScheduleHandler.kt
index cbca4b9..eec74bf 100644
--- a/src/main/kotlin/top/jie65535/jcf/ScheduleHandler.kt
+++ b/src/main/kotlin/top/jie65535/jcf/ScheduleHandler.kt
@@ -1,7 +1,6 @@
 package top.jie65535.jcf
 
 import net.mamoe.mirai.Bot
-import net.mamoe.mirai.console.command.ConsoleCommandSender.name
 import net.mamoe.mirai.utils.MiraiLogger
 import top.jie65535.jcf.util.LockUtil
 import java.util.*
@@ -10,10 +9,13 @@ import kotlin.concurrent.thread
 /**
  * 任务调度
  *
- * @property    bot 每个 bot 维护一个调度器
- * @property logger 日志
+ * @param    bot 每个 bot 维护一个调度器
+ * @param logger 日志（默认无）
  */
-class ScheduleHandler(private val bot: Bot, private val logger: MiraiLogger) {
+class ScheduleHandler(
+    private val bot: Bot,
+    private val logger: MiraiLogger? = null,
+) {
     // region -- 常量、变量
     /**
      * 任务表
@@ -48,10 +50,18 @@ class ScheduleHandler(private val bot: Bot, private val logger: MiraiLogger) {
      */
     private var swap: Calendar? = null
 
+    /**
+     * 调度器名称
+     */
+    private val name = "sch:${bot.id}:" + UUID.randomUUID().toString()
+
     /**
      * 线程：循环执行核对与调度
      */
-    private val loopThread = thread(name = "schedule:${bot.id}:${bot.nick}") { loop() }
+    private val loopThread = thread(name = "$name:thr") {
+        logger?.info("调度器[$name]启动")
+        loop()
+    }
 
     // endregion
 
@@ -69,7 +79,7 @@ class ScheduleHandler(private val bot: Bot, private val logger: MiraiLogger) {
     /**
      * 取反 [eq] 函数
      */
-    private infix fun Calendar.neq(then: Calendar): Boolean = !eq(then)
+    private infix fun Calendar.neq(then: Calendar?): Boolean = !eq(then)
 
     /**
      * 暂存的时刻重入时刻表
@@ -112,9 +122,10 @@ class ScheduleHandler(private val bot: Bot, private val logger: MiraiLogger) {
      */
     private fun Thread.delay(time: Long): Boolean =
         try {
-            Thread.sleep(1000 * 20)
+            Thread.sleep(time)
             true
-        } catch (_: Exception) {
+        } catch (e: Exception) {
+            logger?.warning("调度器[$name]异常", e)
             false
         }
 
@@ -126,24 +137,161 @@ class ScheduleHandler(private val bot: Bot, private val logger: MiraiLogger) {
         while (!thread.isInterrupted) {
             if (pause) continue
             if (periodList.isEmpty()) continue
-            if (!thread.delay(1000 * 20))
-                break
+            if (!thread.delay(1000 * 20)) break
 
             val now = Calendar.getInstance()
             reSwap(now)
             if (!isThen(now)) continue
 
+            logger?.info("调度器[$name]执行任务...")
             taskLock.withLock {
                 // TODO 异步、限时
-                forEach { (id, task) -> task(id) }
+                for ((id, task) in this) {
+                    if (pause) {
+                        logger?.info("调度器[$name]执行在任务中暂停")
+                        break
+                    }
+                    else task(id)
+                }
             }
-        }// while
-        logger.info("线程[$name]已结束")
-        // TODO clean
+        }
+        taskLock.withLock { clear() }
+        periodLock.withLock { clear() }
+        logger?.info("调度器[$name]已关闭")
     }
     // endregion
 
-    // region -- TODO 参数与状态
+    // region -- 状态
+
+    /**
+     * 暂停调度
+     */
+    fun pause() {
+        pause = true
+        logger?.info("暂停调度器[$name]...")
+    }
+
+    /**
+     * 关闭调度，清理资源
+     */
+    fun close() {
+        pause = true
+        loopThread.interrupt()
+        taskLock.withLock { clear() }
+        periodLock.withLock { clear() }
+        logger?.info("已关闭调度器[$name]")
+    }
+
+    /**
+     * 继续执行调度
+     */
+    fun rerun(): Boolean {
+        pause = false
+        logger?.apply {
+            if (loopThread.isAlive) info("调度器[$name]继续运转...")
+            else warning("调度器[$name]已关闭，无法继续")
+        }
+        return loopThread.isAlive
+    }
+
+    /**
+     * 是否暂停
+     */
+    fun isPause() = pause
+
+    /**
+     * 是否可用
+     */
+    fun isAlive() = loopThread.isAlive
+
+    // endregion
+
+    // region -- 参数
+
+    /**
+     * 检查 id 是否已添加
+     */
+    infix fun haveTask(id: String): Boolean = taskLock.withLock {
+        id in this
+    }
+
+    /**
+     * 添加任务。
+     * 不允许覆盖任务；
+     * 若要修改任务，需删除后重新添加。
+     *
+     * @param     id 任务 id
+     * @param action 待执行的任务
+     * @return       id 是否已添加
+     */
+    fun addTask(id: String, action: (String) -> Unit): Boolean = taskLock.withLock {
+        if (id in this)
+            false
+        else {
+            put(id, action)
+            logger?.info("新增任务[$id]，总任务量：$size")
+            true
+        }
+    }
+
+    /**
+     * 删除任务
+     *
+     * @param id 任务 id
+     */
+    infix fun rmTask(id: String) = taskLock.withLock {
+        if (id in this) {
+            this -= id
+            logger?.info("移除任务[$id]，总任务量：$size")
+        }
+    }
+
+    /**
+     * 任务数量
+     */
+    fun taskCount(): Int = taskSet.size
+
+    /**
+     * 是否存在于时刻表
+     */
+    infix fun havePeriod(then: Calendar): Boolean = periodLock.withLock {
+        any { it eq then } || then eq swap
+    }
+
+    /**
+     * 添加时刻。
+     * 时刻表中时与分作为唯一检查，
+     * 因此若参数所包含的时与分已存在与时刻表，则本次输入被忽视。
+     */
+    infix fun addPeriod(then: Calendar) = periodLock.withLock {
+        if (none { it eq then } && then neq swap) {
+            add(then)
+            logger?.apply {
+                val m = then.get(Calendar.MINUTE)
+                val h = then.get(Calendar.HOUR_OF_DAY)
+                info("添加时刻[$h:$m]，时刻表长度：${periodList.size}")
+            }
+        }
+    }
+
+    /**
+     * 移除匹配的时刻
+     */
+    infix fun rmPeriod(then: Calendar) = periodLock.withLock {
+        if (isThen(then)) {
+            swap = null
+            logger?.apply {
+                val m = then.get(Calendar.MINUTE)
+                val h = then.get(Calendar.HOUR_OF_DAY)
+                info("移除时刻[$h:$m]，时刻表长度：${periodList.size}")
+            }
+        }
+    }
+
+    /**
+     * 时刻表长度
+     */
+    fun periodCount(): Int = periodList.size
 
     // endregion
 }