"use client";

import { Select, SelectContent, SelectGroup, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";

import { useState } from "react";
import { toast } from "sonner";
import type { GroupRole } from "@album/contracts";
import { api } from "@/trpc/react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Badge } from "@/components/ui/badge";
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";

export function GroupPeople({
  groupId,
  canManage,
}: {
  groupId: string;
  canManage: boolean;
}) {
  const utils = api.useUtils();
  const members = api.group.members.useQuery({ groupId });
  const [email, setEmail] = useState("");
  const [role, setRole] = useState<GroupRole>("member");
  const [code, setCode] = useState<string | null>(null);
  const setMember = api.group.setMember.useMutation({
    onSuccess: async () => {
      toast.success("Member updated");
      setEmail("");
      await utils.group.members.invalidate({ groupId });
    },
    onError: (error) => toast.error(error.message),
  });
  const invite = api.group.inviteEmail.useMutation({
    onSuccess: () => toast.success("Invite emailed"),
    onError: (error) => toast.error(error.message),
  });
  const createCode = api.group.createCode.useMutation({
    onSuccess: (result) => {
      setCode(result.code);
      toast.success("Invite code created");
    },
    onError: (error) => toast.error(error.message),
  });
  const remove = api.group.removeMember.useMutation({
    onSuccess: async () => {
      await utils.group.members.invalidate({ groupId });
    },
    onError: (error) => toast.error(error.message),
  });

  return (
    <Card>
      <CardHeader>
        <CardTitle>Group members</CardTitle>
        <CardDescription>
          People who can be added to events in this group.
        </CardDescription>
      </CardHeader>
      <CardContent className="flex flex-col gap-4">
        <ul className="flex flex-col gap-2">
          {(members.data ?? []).map((member) => (
            <li key={member.id} className="flex items-center justify-between gap-3">
              <div>
                <p className="font-medium">{member.name}</p>
                <p className="text-xs text-muted-foreground">{member.email}</p>
              </div>
              <div className="flex items-center gap-2">
                <Badge variant="secondary">{member.role}</Badge>
                {canManage ? (
                  <Button
                    size="sm"
                    variant="ghost"
                    onClick={() =>
                      remove.mutate({ groupId, userId: member.userId })
                    }
                  >
                    Remove
                  </Button>
                ) : null}
              </div>
            </li>
          ))}
        </ul>
        {canManage ? (
          <>
            <form
              className="flex flex-wrap items-end gap-2"
              onSubmit={(formEvent) => {
                formEvent.preventDefault();
                setMember.mutate({ groupId, email, role });
              }}
            >
              <Input
                type="email"
                required
                placeholder="email@example.com"
                value={email}
                onChange={(event) => setEmail(event.target.value)}
                className="max-w-xs"
              />
              <Select value={role} onValueChange={(value) => setRole(value as GroupRole)}>
                <SelectTrigger aria-label="Group role"><SelectValue /></SelectTrigger>
                <SelectContent><SelectGroup><SelectItem value="member">Member</SelectItem><SelectItem value="owner">Owner</SelectItem></SelectGroup></SelectContent>
              </Select>
              <Button type="submit" disabled={setMember.isPending}>
                Add existing user
              </Button>
              <Button
                type="button"
                variant="outline"
                disabled={invite.isPending}
                onClick={() =>
                  invite.mutate({
                    email,
                    groupId,
                    groupRole: role,
                  })
                }
              >
                Email invite
              </Button>
            </form>
            <Button
              type="button"
              variant="secondary"
              onClick={() =>
                createCode.mutate({
                  groupId,
                  reusable: true,
                  maxUses: 25,
                  groupRole: "member",
                })
              }
            >
              Create reusable code
            </Button>
            {code ? (
              <p className="text-sm">
                Share this code once: <code>{code}</code>
              </p>
            ) : null}
          </>
        ) : null}
      </CardContent>
    </Card>
  );
}