# All files / atlas-mobile-ts/src/components/Map/Panels/LandmarkDetailsPanel LandmarkDetails.tsx

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     ﻿/* Copyright (C) Click & Push Accessibility, Inc - All Rights Reserved
     * Unauthorized copying of this file, via any medium is strictly prohibited
     * Proprietary and confidential
     * Written and maintained by the Click & Push Development team
     * <dev@clicknpush.ca>, January 2022
     */

    import { FontAwesome } from "@expo/vector-icons";
    import React, { memo, useEffect, useRef, useState } from "react";
    import { ActivityIndicator, Alert, Dimensions, FlatList, Image, Keyboard, Platform, SafeAreaView, StyleSheet, Text, TextInput, TouchableOpacity, View } from "react-native";
    import { ScrollView } from "react-native-gesture-handler";
    import Modal from 'react-native-modal';
    import { LMComment, useComments } from "../../../../hooks/useComments";
    import { Landmark, LMPhoto, useLandmarks } from "../../../../hooks/useLandmarks";
    import { useProfile } from "../../../../hooks/useProfile";
    import { authStore } from "../../../../libs/auth/AuthStore";
    import { colors } from "../../../../utils/GlobalUtils";
    import { IconButton, PrimaryButton } from "../../../Buttons";
    import { DetailsBody } from "./DetailsBody";
    import { DetailsHeader } from "./DetailsHeader";

    /**
     * Props for the {@link LandmarkDetails} component.
     */
    export interface LandmarkDetailsProps {
        /**
         * The {@link Landmark} object being displayed/edited in the {@link LandmarkDetails} modal.
         */
        landmarkId: string | undefined
        /**
         * The state setter for {@link Landmark} object being displayed/edited in the {@link LandmarkDetails} modal.
         */
        setLandmark: (landmark: string) => void;
        /**
         * A callback passed from the parent {@link Map} that toggles the visibility of the {@link LandmarkDetails} modal.
         */
        toggleDetailsPanel: (state: boolean) => void;
        /**
         * A callback passed from the parent {@link Map} that toggles the ability to edit the {@link Landmark} in {@link LandmarkDetails} modal.
         */
        setEditing: (state: boolean) => void;
        /**
         * A flag that determines whether the properties of the {@link Landmark} displayed in the {@link LandmarkDetails} modal can be edited
         */
        editingEnabled: boolean,
        visible: boolean,
        toggleLmDetails: (state: boolean) => void
    }

    /**
     * Component that renders the details of a selected {@link Landmark} and allows the user to edit those details. Contained within a [react-native-modal]{@link https://github.com/react-native-modal/react-native-modal}.
     * @component
     * @category Map
     */
    const LandmarkDetails: React.FC<LandmarkDetailsProps> = ({landmarkId, setLandmark, toggleDetailsPanel, setEditing, editingEnabled, visible, toggleLmDetails}) => {
        // /**
        //  * Holds the state of the {@link Landmark} being displayed.
        //  */
        // const selectedLandmarkState = undefined;
        // const [selectedLandmark, setLandmark] = useState<Landmark | undefined>(selectedLandmarkState);
        /**
         * Holds state of a {@link Landmark} object parallel to {@linkcode selectedLandmarkState} that is manipulated when {@linkcode editingEnabled} is true.
         */
        const [updatedLandmark, setUpdatedLandmark] = useState<Landmark | undefined>(undefined);
        /**
         * Holds text of the current {@link LMComment} being added to this {@link Landmark}.
         */
         const [newCommentId, setNewComment] = useState<string>("");
        /**
         * Holds id of the focused {@link LMComment} in the comment list.
         */
        const [focusedCommentId, setFocusedComment] = useState<string>("");
        /**
         * Holds state of the {@link LMComment} being currently edited.
         */
         const [commentBeingEdited, setCommentBeingEdited] = useState<LMComment | undefined>(undefined);

        /**
         * Flag that tracks if the keyboard is open
         */
        const [keyboardOpened, setKeyboardOpened] = useState<boolean>(false);

        /**
         * State that tracks the index of the currently selected photo, if any are selected
         */
        const [selectedImage, setSelectedImage] = useState<number>(-1)

        const [photosBusy, setPhotosBusy] = useState<boolean>(false)
        const [processingPhoto, setProcessingPhoto] = useState<boolean>(false)

        const {
            updateLandmark, updateLandmarkStatus, resetUpdateLm,
            rateLandmarkAsync, rateLandmarkStatus, resetRateLandmark, rating,
            deleteLandmark, deleteLandmarkStatus, resetDeleteLm,
            landmarkRatedByUser, refetchCheckIfRatedByUser,
            landmark, getLandmarkStatus, refetchLandmark,
            addPhoto, addPhotoStatus, resetAddPhoto,
            deletePhoto, deletePhotoStatus, resetDeletePhoto
        } = useLandmarks({
            landmarkId: landmarkId,
            userLMPairing: {userId: authStore.userId, landmarkId: landmarkId}
        });

        const {
            comments,
            addCommentAsync, addCommentStatus, resetAddComment,
            updateCommentAsync, updateCommentStatus, resetUpdateComment,
            deleteCommentAsync, deleteCommentStatus, resetDeleteComment,
        } = useComments(landmarkId)
        const { profile } = useProfile(authStore.userId)

        /**
         * Holds a reference to the Flatlist containing the comments.
         */
        const commentListRef = useRef<FlatList>();
        /**
         * Holds a reference to the text input for posting a new comment
         */
        const commentTextInputRef = useRef<TextInput>();

        useEffect(() => {
        const keyboardDidShowListener = Keyboard.addListener(
          'keyboardDidShow',
          () => {
            setKeyboardOpened(true); // or some other action
          }
        );
        const keyboardDidHideListener = Keyboard.addListener(
          'keyboardDidHide',
          () => {
            setKeyboardOpened(false); // or some other action
          }
        );

        return () => {
          keyboardDidHideListener.remove();
          keyboardDidShowListener.remove();
        };
      }, []);

        useEffect(() => {
            /**
             * Resets the {@linkcode rateLandmark} mutation on successful update.
             * Embedded in a useEffect that listens to the {@linkcode rateLandmarkStatus} value from the {@link useLandmarks} hook.
             * @memberOf LandmarkDetails
             */
             const resetUpdateLandmark = async () => {
                Iif (rateLandmarkStatus == 'success') {
                    resetRateLandmark();
                    await refetchLandmark()
                }

                Iif (updateLandmarkStatus == 'success') {
                    resetUpdateLm();
                    await refetchLandmark()
                }
            }
            resetUpdateLandmark();
        }, [rateLandmarkStatus, updateLandmarkStatus]);

        useEffect(() => {
            /**
             * Resets the {@linkcode updateComment} mutation on successful update.
             * Embedded in a useEffect that listens to the {@linkcode updateCommentStatus} value from the {@link useComments} hook.
             * @memberOf LandmarkDetails
             */
             const resetUpdateComment = () => {
                Iif (updateCommentStatus == 'success') {
                    commentListRef.current?.scrollToItem({animated: true, item: commentBeingEdited});
                    setCommentBeingEdited(undefined)
                    Keyboard.dismiss();
                }
            }
            resetUpdateComment();
        }, [updateCommentStatus]);

        useEffect(() => {
            /**
             * Resets the {@linkcode deleteLandmark} mutation on successful delete.
             * Embedded in a useEffect that listens to the {@linkcode deleteLandmarkStatus} value from the {@link useLandmarks} hook.
             * @memberOf LandmarkDetails
             */
            const resetDeleteLMOnSuccess = () => {
                Iif (deleteLandmarkStatus == 'success') {
                    resetDeleteLm();
                }
            }
            resetDeleteLMOnSuccess();
        }, [deleteLandmarkStatus]);

        useEffect(() => {
            /**
             * Resets the {@link addCommentAsync} mutation on successful add.
             * Embedded in a useEffect that listens to the {@link addCommentAsync} value from the {@link useComment} hook.
             * @memberOf LandmarkDetailsLandmark
             */
            const resetAddCommentOnSuccess = () => {
                Iif (addCommentStatus == 'success') {
                    resetAddComment();
                }
                setNewComment('')
                commentListRef.current?.scrollToIndex({animated: true, index: 0});
                Keyboard.dismiss();
            }
            resetAddCommentOnSuccess();
        }, [addCommentStatus]);

        useEffect(() => {
            /**
             * Clears selected comment when {@linkcode newCommentId} state changes.
             * @memberOf LandmarkDetails
             */
            const clearSelectedOnNewCommentChange = () => {
                setFocusedComment('')
            }
            clearSelectedOnNewCommentChange();
        }, [newCommentId]);

        useEffect(() => {
            /**
             * Refetch the user's rate pairing for the current landmark when {@linkcode landmark} state changes.
             * @memberOf LandmarkDetails
             */
            const refetechRateStatus = async () => {
                await refetchCheckIfRatedByUser();
            }
            refetechRateStatus();
        }, [landmark]);

        /**
         * Calls the {@linkcode updateLandmark} mutation from the {@link useLandmarks} hook and closes the modal once finished.
         */
        const editLandmark = async () => {
            Iif (updatedLandmark) {
                await updateLandmark(updatedLandmark);
            }

            setEditing(false);
        }

        /**
         * Calls the {@linkcode rateLandmarkAsunc} mutation from the {@link useLandmarks} hook. If 1, the landmark will be upvoted. If -1, it will be downvoted
         */
         const rateLandmark = async (rating: 1 | -1) => {
            Iif (landmark) {
                await rateLandmarkAsync({id: landmark.id, rating: rating});
            }
        }

        /**
         * Calls the {@linkcode deleteLandmark} mutation from the {@link useLandmarks} hook and closes the modal once finished.
         */
        const removeLandmark = async () => {
            await deleteLandmark(landmark?.id);
            toggleDetailsPanel(false);
        }

        /**
         * Calls the {@linkcode addComment} mutation from the {@link useComments} hook.
         */
        const addComment = async () => {
            Iif (newCommentId) {
                await addCommentAsync({
                    edited: false,
                    content: newCommentId,
                    landmark: landmark?.id,
                    poster: authStore.userId,
                    poster_name: profile.username,
                    id: ''
                });
            }
        }

        /**
         * Set a comment to be focused in the comment box. It will expand and show delete and edit controls for that comment.
         * If the comment id given is already selected, the comment will be unselected
         */
        const focusComment = (id: string) => {
            if (focusedCommentId == id) {
                setFocusedComment("");
            }
            else {
                setFocusedComment(id);
            }
        }

        /**
         * Set a comment to be the comment currently edited.
         */
        const startEditingComment = (comment: LMComment) => {
            setCommentBeingEdited(comment);
            commentTextInputRef.current.focus();
        }

        /**
         * Calls the {@linkcode editComment} mutation from the {@link useComments} hook.
         */
        const editComment = async (comment: LMComment) => {
            await updateCommentAsync(comment);
        }

        /**
         * Calls the {@linkcode deleteComment} mutation from the {@link useComments} hook.
         */
        const deleteComment = async (id: string) => {
            deleteCommentAsync(id);
        }

        const getWindowWidth = () => {
            return Dimensions.get('window').width
        }

        /**
         * Prompts user for a confirmation to delete the photo that they just tried to delete
         */
        const tryDeletePhoto = (photoId: string) => {
            Alert.alert(
                'Confirm photo removal',
                'Are you sure you want to delete this photo?',
                [
                    {text: 'Yes',
                    onPress: async () => {
                        setPhotosBusy(true)
                        await deletePhoto(photoId)
                        setSelectedImage(-1)
                        await refetchLandmark()
                    }},
                    {text: 'No'}
                ])
        }

        /**
         * Returns a height for the modal depending on if an image is maximzed, if the keyboard is opened, and if the current landmark has photos associated with it
         */
        const determineModalHeight = () => {
            if (selectedImage > -1)
                return Dimensions.get("window").height
            else if (keyboardOpened && Platform.OS == 'android' || editingEnabled || (profile?.id != landmark?.user && landmark?.photos?.length == 0))
                return Dimensions.get("window").height * .5
            else if (landmark?.photos?.length > 0)
                return Dimensions.get("window").height * .9
            else
                return Dimensions.get("window").height * .7
        }

        return (
            <Modal
                useNativeDriver={true}
                useNativeDriverForBackdrop={true}
                avoidKeyboard={false}
                onBackdropPress={() => {
                    if (editingEnabled) {
                        Keyboard.dismiss();
                    } else {
                        toggleLmDetails(false)
                    }
                }}
                style={{justifyContent: "flex-end", height: '100%', margin: 0}}
                isVisible={visible}>
                <SafeAreaView
                    style={[styles.container, {height: determineModalHeight()}]}>
                    {selectedImage > -1 ?
                    <View style={{ padding: 14}}>
                        <View style={{justifyContent: 'space-between', flexDirection: 'row'}}>
                            <TouchableOpacity onPress={() => setSelectedImage(-1)}>
                                <>
                                    <Text style={{color: 'white', fontSize:20}}><FontAwesome name="arrow-left" color="white" size={20}/> Back</Text>
                                </>
                            </TouchableOpacity>
                            <IconButton style={{alignSelf: 'flex-end', marginBottom: 20}} icon="trash" color="white" size={25} onPress={() => tryDeletePhoto(landmark?.photos[selectedImage].id)}/>
                        </View>
                        <ScrollView style={{width: '100%', }}>
                            <Image style={{resizeMode: 'contain', alignSelf: 'center', height: Dimensions.get('window').height * .9, width: getWindowWidth()}} source={{uri: 'data:image/png;base64,' + landmark?.photos[selectedImage].image_b64}}/>
                        </ScrollView>
                    </View>
                    :
                    (getLandmarkStatus == 'success' || getLandmarkStatus == 'idle') &&
                    updateLandmarkStatus == "idle" || updateLandmarkStatus == "success" &&
                    deleteLandmarkStatus == "idle" || deleteLandmarkStatus == "success" ?
                    <>
                    <DetailsHeader
                        processingPhoto={processingPhoto}
                        addPhotoStatus={addPhotoStatus}
                        deletePhotoStatus={deletePhotoStatus}
                        toggleDetailsPanel={toggleDetailsPanel}
                        landmark={landmark}
                        landmarkRatedByUser={landmarkRatedByUser}
                        editLandmark={editLandmark}
                        editingEnabled={editingEnabled}
                        toggleEditing={setEditing}
                        rateLandmark={rateLandmark}
                        removeLandmark={removeLandmark}
                        updatedLandmark={updatedLandmark}
                        profile={profile} />
                    <DetailsBody
                        setProcessingPhoto={setProcessingPhoto}
                        processingPhoto={processingPhoto}
                        profileId={profile?.id}
                        setKeyboardOpened={setKeyboardOpened}
                        keyboardOpened={keyboardOpened}
                        setSelectedImage={setSelectedImage}
                        landmark={landmark}
                        updatedLandmark={updatedLandmark}
                        commentListRef={commentListRef}
                        commentTextInputRef={commentTextInputRef}
                        commentBeingEdited={commentBeingEdited}
                        comments={comments}
                        addComment={addComment}
                        setCommentBeingEdited={setCommentBeingEdited}
                        newCommentId={newCommentId}
                        editComment={editComment}
                        focusComment={focusComment}
                        deleteComment={deleteComment}
                        setNewComment={setNewComment}
                        focusedCommentId={focusedCommentId}
                        startEditingComment={startEditingComment}
                        editingEnabled={editingEnabled}
                        setUpdatedLandmark={setUpdatedLandmark}
                        tryDeletePhoto={tryDeletePhoto}
                        deletePhotoStatus={deletePhotoStatus}
                        toggleLmDetails={toggleLmDetails}
                        addPhoto={addPhoto}
                        addPhotoStatus={addPhotoStatus}/>
                    </> :
                    <View style={{height: '100%', justifyContent: "space-evenly", alignItems: "center", marginHorizontal: 20}}>
                        <Text style={{color: 'white', fontSize: 20}}>{
                            getLandmarkStatus == 'loading' ? "Loading landmark..." :
                            getLandmarkStatus == 'error' ? "Something went wrong trying to load the landmark" :
                            deleteLandmarkStatus == 'loading' ? "Deleting landmark..." :
                            deleteLandmarkStatus == 'error' ? "Something went wrong trying to delete the landmark" :
                            updateLandmarkStatus == 'loading' ? "Updating landmark..." :
                            updateLandmarkStatus == 'error' ? "Something went wrong trying to update the landmark" :
                            addCommentStatus == 'loading' ? "Adding comment..." :
                            addCommentStatus == 'error' ? "Something went wrong trying to add the comment" :
                            updateCommentStatus == 'loading' ? "Updating comment..." :
                            updateCommentStatus == 'error' ? "Something went wrong trying to update the comment" :
                            deleteCommentStatus == 'loading' ? "Deleting comment..." :
                            deleteCommentStatus == 'error' ? "Something went wrong trying to delete the comment" : null}
                        </Text>
                        {
                            deleteLandmarkStatus == 'loading' || updateLandmarkStatus == 'loading' || getLandmarkStatus == "loading" ? <ActivityIndicator color='white' size="large"/> :
                            deleteLandmarkStatus == 'error' || updateLandmarkStatus == 'error' || getLandmarkStatus == "error" ? <PrimaryButton text="Okay" style={{borderColor: 'white', borderWidth: 1}} onPress={() => refetchLandmark()} /> : null
                        }
                    </View>}
                </SafeAreaView>
            </Modal>
        )
    }

    const styles = StyleSheet.create({
        container: {
            backgroundColor: colors.red,
        },
        detailsContainer: {
            flex: 1,
            marginHorizontal: 20
        },

        commentContainer: {
            flex: 5,
            marginBottom: 40,
        },
        title: {

        },
        input: {
            padding: 5,
            color: 'black'
        }
    })

    export default memo(LandmarkDetails);