import { useState } from "react";
import type { components } from "../../reflector-api";
import { parseMaybeNonEmptyString } from "../../lib/utils";

type UpdateTranscript = components["schemas"]["UpdateTranscript"];
type GetTranscriptWithParticipants =
  components["schemas"]["GetTranscriptWithParticipants"];
type GetTranscriptTopic = components["schemas"]["GetTranscriptTopic"];
import {
  useTranscriptUpdate,
  useTranscriptParticipants,
} from "../../lib/apiHooks";
import {
  Heading,
  IconButton,
  Input,
  Flex,
  Spacer,
  Spinner,
  Box,
  Text,
} from "@chakra-ui/react";
import { LuPen, LuCopy, LuCheck, LuDownload, LuVideo } from "react-icons/lu";
import ShareAndPrivacy from "./shareAndPrivacy";
import { buildTranscriptWithTopics } from "./buildTranscriptWithTopics";
import { toaster } from "../../components/ui/toaster";
import { useAuth } from "../../lib/AuthProvider";
import { API_URL } from "../../lib/apiClient";

type TranscriptTitle = {
  title: string;
  transcriptId: string;
  onUpdate: (newTitle: string) => void;

  // share props
  transcript: GetTranscriptWithParticipants | null;
  topics: GetTranscriptTopic[] | null;
  finalSummaryElement: HTMLDivElement | null;

  // video props
  hasCloudVideo?: boolean;
  videoExpanded?: boolean;
  onVideoToggle?: () => void;
  videoNewBadge?: boolean;
};

const TranscriptTitle = (props: TranscriptTitle) => {
  const [displayedTitle, setDisplayedTitle] = useState(props.title);
  const [preEditTitle, setPreEditTitle] = useState(props.title);
  const [isEditing, setIsEditing] = useState(false);
  const [downloading, setDownloading] = useState(false);
  const updateTranscriptMutation = useTranscriptUpdate();
  const auth = useAuth();
  const accessToken = auth.status === "authenticated" ? auth.accessToken : null;
  const userId = auth.status === "authenticated" ? auth.user?.id : null;
  const isOwner = !!(userId && userId === props.transcript?.user_id);

  const handleDownloadZip = async () => {
    if (!props.transcriptId || downloading) return;
    setDownloading(true);
    try {
      const headers: Record<string, string> = {};
      if (accessToken) {
        headers["Authorization"] = `Bearer ${accessToken}`;
      }
      const resp = await fetch(
        `${API_URL}/v1/transcripts/${props.transcriptId}/download/zip`,
        { headers },
      );
      if (!resp.ok) throw new Error("Download failed");
      const blob = await resp.blob();
      const url = URL.createObjectURL(blob);
      const a = document.createElement("a");
      a.href = url;
      a.download = `transcript_${props.transcriptId.split("-")[0]}.zip`;
      a.click();
      URL.revokeObjectURL(url);
    } catch (err) {
      console.error("Failed to download zip:", err);
    } finally {
      setDownloading(false);
    }
  };
  const participantsQuery = useTranscriptParticipants(
    props.transcript?.id ? parseMaybeNonEmptyString(props.transcript.id) : null,
  );

  const updateTitle = async (newTitle: string, transcriptId: string) => {
    try {
      const requestBody: UpdateTranscript = {
        title: newTitle,
      };
      await updateTranscriptMutation.mutateAsync({
        params: {
          path: { transcript_id: transcriptId },
        },
        body: requestBody,
      });
      props.onUpdate(newTitle);
      console.log("Updated transcript title:", newTitle);
    } catch (err) {
      console.error("Failed to update transcript:", err);
      // Revert title on error
      setDisplayedTitle(preEditTitle);
    }
  };

  const handleTitleClick = () => {
    const isMobile = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent);

    if (isMobile) {
      // Use prompt
      const newTitle = prompt("Please enter the new title:", displayedTitle);
      if (newTitle !== null) {
        setDisplayedTitle(newTitle);
        updateTitle(newTitle, props.transcriptId);
      }
    } else {
      setPreEditTitle(displayedTitle);
      setIsEditing(true);
    }
  };

  const handleBlur = () => {
    if (displayedTitle !== preEditTitle) {
      updateTitle(displayedTitle, props.transcriptId);
    }
    setIsEditing(false);
  };
  const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
    setDisplayedTitle(e.target.value);
  };

  const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
    if (e.key === "Enter") {
      updateTitle(displayedTitle, props.transcriptId);
      setIsEditing(false);
    } else if (e.key === "Escape") {
      setDisplayedTitle(preEditTitle);
      setIsEditing(false);
    }
  };

  return (
    <>
      {isEditing ? (
        <Input
          type="text"
          value={displayedTitle}
          onChange={handleChange}
          onKeyDown={handleKeyDown}
          autoFocus
          onBlur={handleBlur}
          size={"lg"}
          fontSize={"xl"}
          fontWeight={"bold"}
          // className="text-2xl lg:text-4xl font-extrabold text-center mb-4 w-full border-none bg-transparent overflow-hidden h-[fit-content]"
        />
      ) : (
        <Flex alignItems="center">
          <Heading
            onClick={handleTitleClick}
            cursor={"pointer"}
            size={"lg"}
            lineClamp={1}
            pr={2}
          >
            {displayedTitle}
          </Heading>
          <Spacer />
          <IconButton
            aria-label="Edit Transcript Title"
            onClick={handleTitleClick}
            size="sm"
            variant="subtle"
          >
            <LuPen />
          </IconButton>
          {props.transcript && props.topics && (
            <>
              <IconButton
                aria-label="Copy Transcript"
                size="sm"
                variant="subtle"
                onClick={() => {
                  const text = buildTranscriptWithTopics(
                    props.topics || [],
                    participantsQuery?.data || null,
                    props.transcript?.title || null,
                  );
                  if (!text) return;
                  navigator.clipboard
                    .writeText(text)
                    .then(() => {
                      toaster
                        .create({
                          placement: "top",
                          duration: 2500,
                          render: () => (
                            <div className="chakra-ui-light">
                              <div
                                style={{
                                  background: "#38A169",
                                  color: "white",
                                  padding: "8px 12px",
                                  borderRadius: 6,
                                  display: "flex",
                                  alignItems: "center",
                                  gap: 8,
                                  boxShadow: "rgba(0,0,0,0.25) 0px 4px 12px",
                                }}
                              >
                                <LuCheck /> Transcript copied
                              </div>
                            </div>
                          ),
                        })
                        .then(() => {});
                    })
                    .catch(() => {});
                }}
              >
                <LuCopy />
              </IconButton>
              {isOwner && (
                <IconButton
                  aria-label="Download Transcript Zip"
                  size="sm"
                  variant="subtle"
                  onClick={handleDownloadZip}
                  disabled={downloading}
                >
                  {downloading ? <Spinner size="sm" /> : <LuDownload />}
                </IconButton>
              )}
              {props.hasCloudVideo && props.onVideoToggle && (
                <Box position="relative" display="inline-flex">
                  <IconButton
                    aria-label={
                      props.videoExpanded
                        ? "Hide cloud recording"
                        : "Show cloud recording"
                    }
                    size="sm"
                    variant={props.videoExpanded ? "solid" : "subtle"}
                    colorPalette={props.videoExpanded ? "blue" : undefined}
                    onClick={props.onVideoToggle}
                  >
                    <LuVideo />
                  </IconButton>
                  {props.videoNewBadge && (
                    <Text
                      position="absolute"
                      top="-1"
                      right="-1"
                      fontSize="2xs"
                      fontWeight="bold"
                      color="white"
                      bg="red.500"
                      px={1}
                      borderRadius="sm"
                      lineHeight="tall"
                      pointerEvents="none"
                    >
                      new
                    </Text>
                  )}
                </Box>
              )}
              <ShareAndPrivacy
                finalSummaryElement={props.finalSummaryElement}
                transcript={props.transcript}
                topics={props.topics}
              />
            </>
          )}
        </Flex>
      )}
    </>
  );
};

export default TranscriptTitle;