import type { Chain } from "@/entities/chain/schema";
import { useChainState } from "@/entities/chain/model";
import { useNavigate } from "@tanstack/react-router";

import { useState, useRef } from "react";
import humanizeDuration from "humanize-duration";
import { upsertChain } from "@/entities/chain/api/upsert";

import { ActionEditor } from "@/widgets/action-editor";
import { RenameChainButton } from "@/features/rename-chain";
import { DeleteChainButton } from "@/features/delete-chain";

import { Typography, Button } from "@mui/material";
import Breadcrumbs from "@mui/material/Breadcrumbs";
import SettingsIcon from "@mui/icons-material/Settings";

interface ChainEditorProps {
  chain: Chain;
}

export default function ChainEditor({ chain }: ChainEditorProps) {
  const actionsListRef = useRef<HTMLDivElement>(null);
  const [addingNewAction, setAddingNewAction] = useState(false);
  const navigate = useNavigate({ from: "/$namespace/$chainId" });
  const addCommentAction = useChainState((state) => state.addCommentAction);

  if (!chain.actions || chain.actions.length === 0 || addingNewAction)
    return (
      <div className="flex h-full flex-col">
        <div className="flex items-center justify-between">
          <Breadcrumbs sx={{ fontSize: "24px" }}>
            <Typography
              variant="h5"
              sx={{ color: "#4C4E64DE", opacity: "60%" }}
              className="select-none"
            >
              {chain.name}
            </Typography>
            <Typography
              variant="h5"
              sx={{ color: "#4C4E64DE", opacity: "87%" }}
              className="select-none"
            >
              Новый пост
            </Typography>
          </Breadcrumbs>

          <div className="flex items-center gap-x-5">
            <RenameChainButton chain={chain} />
            <DeleteChainButton chain={chain} />
          </div>
        </div>

        <div className="flex grow flex-col items-center justify-center">
          <ActionEditor
            onSave={async (_, action) => {
              addCommentAction(chain._id!, action);
              await upsertChain(chain);

              if (addingNewAction) setAddingNewAction(false);
              navigate({ to: "/$namespace/$chainId" });

              setTimeout(
                () =>
                  actionsListRef.current?.scrollTo({
                    behavior: "smooth",
                    top: actionsListRef.current.scrollHeight,
                  }),
                0,
              );
            }}
            onClose={() => {
              if (addingNewAction) setAddingNewAction(false);
            }}
            canExit={addingNewAction}
          />
        </div>
      </div>
    );

  return (
    <div className="relative flex h-full flex-col">
      <div className="flex items-center justify-between">
        <Typography
          variant="h5"
          sx={{ color: "#4C4E64DE", opacity: "87%" }}
          className="select-none"
        >
          {chain.name}
        </Typography>
        <div className="flex items-center gap-x-5">
          <RenameChainButton chain={chain} />
          <DeleteChainButton chain={chain} />
        </div>
      </div>

      <div
        ref={actionsListRef}
        className="no-scrollbar mt-8 flex grow flex-col items-center gap-y-24 overflow-y-scroll pb-20"
      >
        {chain.actions.map((action, index) => {
          if (action.actionType === "comment")
            return (
              <div
                key={index}
                className="relative w-[450px] select-none whitespace-pre-line rounded-md bg-white p-4 text-[#4C4E64DE] opacity-[84%] shadow-lg after:absolute after:left-1/2 after:top-20 after:h-8 after:w-1 after:-translate-x-1/2 after:rounded-md after:bg-[#666CFF] after:opacity-[12%]"
              >
                {action.text}
              </div>
            );

          return (
            <div
              key={index}
              className="relative flex select-none items-center gap-x-2 text-[#4C4E64DE] opacity-[84%] before:absolute before:-top-6 before:left-1/2 before:h-4 before:w-4 before:-translate-x-1/2 before:rounded-full before:border-[2.5px] before:border-primary after:absolute after:left-1/2 after:top-11 after:h-16 after:w-1 after:-translate-x-1/2 after:rounded-md after:bg-[#666CFF] after:opacity-[12%]"
            >
              <span>
                Ожидание:{" "}
                {humanizeDuration(action.waitFor * 1000, { language: "ru" })}
              </span>

              <button className="flex h-[20px] items-center justify-center rounded-sm bg-[#4C4E648A] bg-opacity-[54%] p-0">
                <SettingsIcon sx={{ width: "20px", color: "white" }} />
              </button>
            </div>
          );
        })}

        <div className="-mt-4">
          <Button
            variant="outlined"
            sx={{
              width: "450px",
            }}
            onClick={() => setAddingNewAction(true)}
          >
            Добавить
          </Button>
        </div>
      </div>
    </div>
  );
}