"use client";

import { useEffect, useState } from "react";
import { Textarea } from "../ui/textarea";
import { toast } from "../ui/use-toast";
import { SafetyNotes, fetchSafetyNote, updateSafetyNote } from "@/lib/db";
import {
  Card,
  CardContent,
  CardDescription,
  CardFooter,
  CardHeader,
  CardTitle,
} from "../ui/card";
import { useSession } from "next-auth/react";
import dayjs from "dayjs";
import relativeTime from "dayjs/plugin/relativeTime";
import ReactMarkdown from "react-markdown";
import remarkGfm from "remark-gfm";

dayjs.extend(relativeTime);

export default function SafetyNotesCard({
  objectId,
  type,
  title,
}: {
  objectId: string;
  type: SafetyNotes["_id"]["type"];
  title?: string;
}) {
  const session = useSession();
  const [draft, setDraft] = useState("");
  const [value, setValue] = useState<SafetyNotes | null>(null);
  const [ready, setReady] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const [editing, setEditing] = useState(false);

  useEffect(() => {
    fetchSafetyNote(objectId, type)
      .then((note) => {
        setDraft(note?.text || "");
        setValue(note);
        setReady(true);
      })
      .catch((e) => {
        setError(String(e));
      });
  }, [objectId, type]);

  return (
    <Card>
      <CardHeader>
        <CardTitle>
          {title ?? type.charAt(0).toUpperCase() + type.slice(1) + " notes"}
        </CardTitle>
      </CardHeader>
      <CardContent>
        {editing ? (
          <Textarea
            rows={8}
            placeholder={
              error
                ? error
                : ready
                ? "Enter notes here... (save on unfocus)"
                : "Fetching notes..."
            }
            className="!min-h-[80px] max-h-[50vh]"
            disabled={!ready || error != null}
            value={ready ? draft : undefined} // not defaulting to undefined causes next to complain
            autoFocus
            onChange={(e) => setDraft(e.currentTarget.value)}
            onBlur={async () => {
              if (draft === value?.text ?? "") return setEditing(false);

              try {
                await updateSafetyNote(objectId, type, draft);
                setValue({
                  _id: { id: objectId, type: type },
                  edited_at: new Date(Date.now()),
                  edited_by: session.data?.user?.email || "",
                  text: draft,
                });
                setEditing(false);
                toast({
                  title: "Updated notes",
                });
              } catch (err) {
                setEditing(false);
                toast({
                  title: "Failed to update notes",
                  description: String(err),
                  variant: "destructive",
                });
              }
            }}
          />
        ) : (
          <div onClick={() => setEditing(true)}>
            {error ? (
              <>{error}</>
            ) : value?.text ? (
              <ReactMarkdown
                className="prose prose-a:text-[#fd6671] prose-img:max-h-96 max-w-none"
                remarkPlugins={[remarkGfm]}
              >
                {value.text}
              </ReactMarkdown>
            ) : ready ? (
              <i>Click to add a note</i>
            ) : (
              <i>Fetching notes...</i>
            )}
          </div>
        )}
      </CardContent>
      <CardFooter className="-my-2">
        <CardDescription>
          {value ? (
            <>
              Last edited {dayjs(value.edited_at).fromNow()} by{" "}
              {value.edited_by}
            </>
          ) : (
            <>No object note set</>
          )}
        </CardDescription>
      </CardFooter>
    </Card>
  );
}