import { useState } from "react";
import { useAsyncData } from "../../lib/useAsyncData";
import {
  adminListAutomations,
  adminCreateAutomation,
  adminRunAutomation,
  adminDeleteAutomation,
  isNotImplemented,
} from "../../lib/api";
import type { AdminAutomationRecord } from "../../lib/types";
import { useAuditStore } from "../audit";
import { Notice, PageHeader } from "../components";
import { Button, Surface, Switch, Tag } from "../../components/primitives";
import { Icon } from "../../components/Icon";

const sample: AdminAutomationRecord[] = [
  { id: "r1", name: "睡前总结", kind: "reminder", cron: "0 22 * * *", enabled: true },
  { id: "r2", name: "晨间问候", kind: "cron", cron: "0 8 * * *", enabled: true },
  { id: "r3", name: "设备待机提醒", kind: "queue", cron: "—", enabled: false },
];

export function AutomationsModule(): React.ReactNode {
  const { data, error, reload } = useAsyncData(adminListAutomations, []);
  const log = useAuditStore((s) => s.log);
  const backend = !isNotImplemented(error);
  const rows = backend && data && data.length > 0 ? data : sample;

  const [name, setName] = useState("");
  const [kind, setKind] = useState("cron");
  const [expr, setExpr] = useState("");
  const [busy, setBusy] = useState(false);
  const [msg, setMsg] = useState<string | null>(null);

  const create = () => {
    setBusy(true);
    setMsg(null);
    adminCreateAutomation({ name, kind, expression: expr })
      .then((r) => {
        log("automation.create", "ok");
        setMsg(`已创建 ${r.name}（${r.kind}）`);
        setName("");
        setExpr("");
        reload();
      })
      .catch((e: unknown) => {
        log("automation.create", "error");
        setMsg(e instanceof Error ? e.message : "创建失败");
      })
      .finally(() => setBusy(false));
  };

  const run = (id: string, label: string) => {
    setBusy(true);
    setMsg(null);
    adminRunAutomation(id)
      .then((r) => {
        log("automation.run", "ok");
        setMsg(`已触发 ${label}：${JSON.stringify(r.output)}`);
      })
      .catch((e: unknown) => {
        log("automation.run", "error");
        setMsg(e instanceof Error ? e.message : "触发失败");
      })
      .finally(() => setBusy(false));
  };

  const del = (id: string, label: string) => {
    setBusy(true);
    setMsg(null);
    adminDeleteAutomation(id)
      .then(() => {
        log("automation.delete", "ok");
        setMsg(`已删除 ${label}`);
        reload();
      })
      .catch((e: unknown) => {
        log("automation.delete", "error");
        setMsg(e instanceof Error ? e.message : "删除失败");
      })
      .finally(() => setBusy(false));
  };

  return (
    <div className="space-y-5">
      <PageHeader
        title="自动化与提醒"
        subtitle="提醒 + cron + 消息队列事件 + 后台任务(含终端任务) + 运行日志"
        actions={
          <Button variant="primary" disabled={busy || !name || !expr} onClick={create}>
            新增自动化
          </Button>
        }
      />

      {msg ? <Notice tone={msg.includes("失败") ? "err" : "ok"}>{msg}</Notice> : null}
      {backend && !error ? <Notice tone="ok">后端已返回自动化配置（数据以接口为准）。</Notice> : null}
      {error && !backend ? <Notice tone="warn">后端未提供 /api/v1/admin/automations，以下为示例壳（M10 提供真实数据）。</Notice> : null}
      {error && backend ? <Notice tone="err">{error}</Notice> : null}

      <Surface className="space-y-3">
        <h3 className="text-sm font-semibold">提醒 / CRON / 队列事件</h3>
        <div className="grid grid-cols-1 gap-2 sm:grid-cols-3">
          <label className="block space-y-1">
            <span className="text-xs text-[var(--mu-text-lo)]">名称</span>
            <input value={name} onChange={(e) => setName(e.target.value)} className={inputCls} />
          </label>
          <label className="block space-y-1">
            <span className="text-xs text-[var(--mu-text-lo)]">类型</span>
            <select value={kind} onChange={(e) => setKind(e.target.value)} className={inputCls}>
              <option value="cron">cron</option>
              <option value="event">event</option>
            </select>
          </label>
          <label className="block space-y-1">
            <span className="text-xs text-[var(--mu-text-lo)]">表达式（cron / bus subject）</span>
            <input value={expr} onChange={(e) => setExpr(e.target.value)} placeholder="0 22 * * *" className={inputCls} />
          </label>
        </div>

        {rows.map((r) => (
          <div key={r.id} className="flex items-center gap-3 rounded-[var(--mu-radius)] bg-[var(--mu-surface-2)] px-3 py-2.5 text-sm">
            <span className="font-medium">{r.name}</span>
            <Tag tone="neutral">{r.kind}</Tag>
            <span className="font-mono text-xs text-[var(--mu-text-lo)]">{r.cron || "—"}</span>
            <span className="ml-auto flex items-center gap-2">
              <Switch checked={r.enabled} disabled onChange={() => {}} label="启用" />
              <Button size="sm" variant="ghost" disabled={busy} onClick={() => run(r.id, r.name)}>
                触发
              </Button>
              <Button size="sm" variant="ghost" disabled={busy} onClick={() => del(r.id, r.name)}>
                删除
              </Button>
            </span>
          </div>
        ))}
      </Surface>

      <Surface className="space-y-3">
        <h3 className="text-sm font-semibold">后台任务 / 运行历史</h3>
        <div className="grid grid-cols-1 gap-3 sm:grid-cols-3">
          {["消息队列事件", "后台任务（含终端任务）", "运行日志"].map((x) => (
            <div key={x} className="rounded-[var(--mu-radius)] border border-[var(--mu-glass-border)] bg-[var(--mu-surface-3)]/60 p-4 text-center text-xs text-[var(--mu-text-mid)]">
              <div className="mb-2 flex justify-center"><Icon name="package" size={20} /></div>
              {x} 占位 —— 后端 M10+ 提供
            </div>
          ))}
        </div>
      </Surface>
    </div>
  );
}

const inputCls =
  "w-full rounded-[var(--mu-radius)] bg-[var(--mu-surface-2)] px-3 py-2 text-sm outline-none focus:ring-1 focus:ring-[var(--mu-accent)]";