import { Badge } from "@/components/ui/badge";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import type { AuditLog, PublicAccount, RoleDefinition } from "@/modules/core/types";
import { ROLE_LABELS } from "@/modules/core/types";

type SettingsOverviewProps = {
  accounts: PublicAccount[];
  roles: RoleDefinition[];
  auditLogs: AuditLog[];
};

export function SettingsOverview({
  accounts,
  roles,
  auditLogs,
}: SettingsOverviewProps): React.ReactElement {
  return (
    <div className="mx-auto flex w-full max-w-7xl flex-col gap-5">
      <section className="border-b pb-5">
        <Badge variant="success">RBAC + Audit</Badge>
        <h1 className="mt-3 text-3xl font-semibold tracking-normal">权限设置</h1>
        <p className="mt-2 text-sm text-muted-foreground">内置角色、账号状态和关键操作审计。</p>
      </section>

      <section className="grid gap-4 md:grid-cols-3">
        <Card>
          <CardHeader>
            <CardTitle>系统账号</CardTitle>
          </CardHeader>
          <CardContent>
            <p className="text-3xl font-semibold">{accounts.length}</p>
            <p className="mt-2 text-sm text-muted-foreground">服务端持久化账号</p>
          </CardContent>
        </Card>
        <Card>
          <CardHeader>
            <CardTitle>角色数量</CardTitle>
          </CardHeader>
          <CardContent>
            <p className="text-3xl font-semibold">{roles.length}</p>
            <p className="mt-2 text-sm text-muted-foreground">内置权限组</p>
          </CardContent>
        </Card>
        <Card>
          <CardHeader>
            <CardTitle>审计日志</CardTitle>
          </CardHeader>
          <CardContent>
            <p className="text-3xl font-semibold">{auditLogs.length}</p>
            <p className="mt-2 text-sm text-muted-foreground">最近 100 条</p>
          </CardContent>
        </Card>
      </section>

      <section className="grid gap-4 xl:grid-cols-[0.9fr_1.1fr]">
        <Card>
          <CardHeader>
            <CardTitle>内置角色</CardTitle>
          </CardHeader>
          <CardContent className="space-y-3">
            {roles.map((role) => (
              <div key={role.id} className="rounded-md border p-3">
                <div className="flex items-center justify-between gap-3">
                  <p className="font-medium">{role.label}</p>
                  <Badge variant="secondary">{role.permissions.length} 权限</Badge>
                </div>
                <p className="mt-2 text-sm text-muted-foreground">{role.description}</p>
                <div className="mt-3 flex flex-wrap gap-2">
                  {role.permissions.map((permission) => (
                    <Badge key={permission} variant="outline">
                      {permission}
                    </Badge>
                  ))}
                </div>
              </div>
            ))}
          </CardContent>
        </Card>

        <Card>
          <CardHeader>
            <CardTitle>账号列表</CardTitle>
          </CardHeader>
          <CardContent>
            <div className="overflow-x-auto rounded-md border">
              <table className="w-full min-w-[620px] text-sm">
                <thead className="bg-secondary text-left text-xs text-muted-foreground">
                  <tr>
                    <th className="px-4 py-3 font-medium">账号</th>
                    <th className="px-4 py-3 font-medium">角色</th>
                    <th className="px-4 py-3 font-medium">状态</th>
                    <th className="px-4 py-3 text-right font-medium">创建时间</th>
                  </tr>
                </thead>
                <tbody className="divide-y bg-card">
                  {accounts.map((account) => (
                    <tr key={account.id}>
                      <td className="px-4 py-3">
                        <p className="font-medium">{account.name}</p>
                        <p className="text-xs text-muted-foreground">{account.email}</p>
                      </td>
                      <td className="px-4 py-3">{ROLE_LABELS[account.role]}</td>
                      <td className="px-4 py-3">
                        <Badge variant={account.status === "active" ? "success" : "danger"}>
                          {account.status === "active" ? "启用" : "停用"}
                        </Badge>
                      </td>
                      <td className="px-4 py-3 text-right text-muted-foreground">
                        {new Date(account.createdAt).toLocaleString("zh-CN")}
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>
          </CardContent>
        </Card>
      </section>

      <Card>
        <CardHeader>
          <CardTitle>审计日志</CardTitle>
        </CardHeader>
        <CardContent>
          <div className="overflow-x-auto rounded-md border">
            <table className="w-full min-w-[860px] text-sm">
              <thead className="bg-secondary text-left text-xs text-muted-foreground">
                <tr>
                  <th className="px-4 py-3 font-medium">时间</th>
                  <th className="px-4 py-3 font-medium">操作者</th>
                  <th className="px-4 py-3 font-medium">动作</th>
                  <th className="px-4 py-3 font-medium">对象</th>
                  <th className="px-4 py-3 font-medium">结果</th>
                  <th className="px-4 py-3 font-medium">原因</th>
                </tr>
              </thead>
              <tbody className="divide-y bg-card">
                {auditLogs.map((log) => (
                  <tr key={log.id}>
                    <td className="px-4 py-3 text-muted-foreground">
                      {new Date(log.timestamp).toLocaleString("zh-CN")}
                    </td>
                    <td className="px-4 py-3">{log.actorEmail ?? "系统"}</td>
                    <td className="px-4 py-3">{log.action}</td>
                    <td className="px-4 py-3 text-muted-foreground">
                      {log.targetType}
                      {log.targetId ? ` / ${log.targetId.slice(0, 8)}` : ""}
                    </td>
                    <td className="px-4 py-3">
                      <Badge
                        variant={
                          log.result === "success" ? "success" : log.result === "denied" ? "warning" : "danger"
                        }
                      >
                        {log.result}
                      </Badge>
                    </td>
                    <td className="px-4 py-3 text-muted-foreground">{log.reason}</td>
                  </tr>
                ))}
                {auditLogs.length === 0 ? (
                  <tr>
                    <td className="px-4 py-8 text-center text-muted-foreground" colSpan={6}>
                      暂无审计日志
                    </td>
                  </tr>
                ) : null}
              </tbody>
            </table>
          </div>
        </CardContent>
      </Card>
    </div>
  );
}