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import React, {createRef, RefObject, useEffect, useState} from 'react';
import {Image, View} from 'react-native';
import {MomentTagType, ProfilePreviewType} from '../../types';
import TaggDraggable from '../taggs/TaggDraggable';
import Draggable from './Draggable';
interface MomentTagsProps {
editing: boolean;
tags: MomentTagType[];
setTags: (tag: MomentTagType[]) => void;
imageRef: RefObject<Image>;
deleteFromList?: (user: ProfilePreviewType) => void;
boundaries?: DraggableBoundaries;
}
interface DraggableBoundaries {
top?: number;
bottom?: number;
left?: number;
right?: number;
}
const MomentTags: React.FC<MomentTagsProps> = ({
editing,
tags,
setTags,
imageRef,
deleteFromList,
boundaries,
}) => {
const [offset, setOffset] = useState([0, 0]);
const [imageDimensions, setImageDimensions] = useState([0, 0]);
const [maxZIndex, setMaxZIndex] = useState(1);
const [draggableRefs, setDraggableRefs] = useState<RefObject<View>[]>([]);
// [minXBoundary, maxXBoundary, minYBoundary, maxYBoundary]
const [boundariesList, setBoundariesList] = useState<number[]>([0, 0, 0, 0]);
const updateTagPosition = (ref: RefObject<Image>, userId: string) => {
if (ref !== null && ref.current !== null) {
ref.current.measure(
(
_fx: number, // location of ref relative to parent element
_fy: number,
_width: number,
_height: number,
px: number, // location of ref relative to entire screen
py: number,
) => {
const x = ((px - offset[0]) / imageDimensions[0]) * 100;
const y = ((py - offset[1]) / imageDimensions[1]) * 100;
setTags(
tags.map((tag) =>
tag.user.id === userId
? {
id: '',
x,
y,
z: maxZIndex - 1, // TODO: change this
user: tag.user,
}
: tag,
),
);
},
);
}
};
useEffect(() => {
setDraggableRefs(tags.map((_) => createRef()));
}, [tags]);
useEffect(() => {
setTimeout(
() => {
if (imageRef && imageRef.current) {
imageRef.current.measure(
(
fx: number, // location of ref relative to parent element
fy: number,
width: number,
height: number,
_x: number, // location of ref relative to entire screen
_y: number,
) => {
setOffset([fx, fy]);
setImageDimensions([width, height]);
},
);
}
// Checks for and adds boundaries
if (boundaries) {
const newBounds = [...boundariesList];
if (boundaries.top) {
newBounds[2] = boundaries.top;
}
if (boundaries.bottom) {
newBounds[3] = boundaries.bottom;
}
if (boundaries.left) {
newBounds[0] = boundaries.left;
}
if (boundaries.right) {
newBounds[1] = boundaries.right;
}
setBoundariesList(newBounds);
}
},
editing ? 100 : 0,
);
}, []);
if (!tags) {
return null;
}
return editing && deleteFromList ? (
<>
{tags.map((tag, index) => (
<Draggable
key={tag.user.id + tag.x + tag.y}
x={(imageDimensions[0] * tag.x) / 100 + offset[0]}
y={(imageDimensions[1] * tag.y) / 100 + offset[1]}
z={tag.z}
minX={offset[0] + boundariesList[0]}
minY={offset[1] + boundariesList[2]}
maxX={imageDimensions[0] + offset[0] - boundariesList[1]}
maxY={imageDimensions[1] + offset[1] - boundariesList[3]}
onDragStart={() => {
const currZIndex = maxZIndex;
setMaxZIndex(currZIndex + 1);
return currZIndex;
}}
onDragRelease={() =>
updateTagPosition(draggableRefs[index], tag.user.id)
}>
<TaggDraggable
draggableRef={draggableRefs[index]}
taggedUser={tag.user}
editingView={true}
deleteFromList={() => deleteFromList(tag.user)}
/>
</Draggable>
))}
</>
) : (
<>
{tags.map((tag, index) => (
<Draggable
key={tag.user.id}
x={(imageDimensions[0] * tag.x) / 100 + offset[0]}
y={(imageDimensions[1] * tag.y) / 100 + offset[1]}
z={tag.z}
minX={offset[0] + boundariesList[0]}
minY={offset[1] + boundariesList[2]}
maxX={imageDimensions[0] + offset[0] - boundariesList[1]}
maxY={imageDimensions[1] + offset[1] - boundariesList[3]}
disabled={true}>
<TaggDraggable
draggableRef={draggableRefs[index]}
taggedUser={tag.user}
editingView={editing}
deleteFromList={() => null}
/>
</Draggable>
))}
</>
);
};
export default MomentTags;
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