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<script lang="ts">
import { getContext, createEventDispatcher, onDestroy } from 'svelte';
import { useSvelteFlow, useNodesInitialized, useStore } from '@xyflow/svelte';
const dispatch = createEventDispatcher();
const i18n = getContext('i18n');
import { onMount, tick } from 'svelte';
import { writable } from 'svelte/store';
import { models, showOverview, theme, user } from '$lib/stores';
import '@xyflow/svelte/dist/style.css';
import CustomNode from './Overview/Node.svelte';
import Flow from './Overview/Flow.svelte';
import XMark from '../icons/XMark.svelte';
import ArrowLeft from '../icons/ArrowLeft.svelte';
const { width, height } = useStore();
const { fitView, getViewport } = useSvelteFlow();
const nodesInitialized = useNodesInitialized();
export let history;
let selectedMessageId = null;
const nodes = writable([]);
const edges = writable([]);
const nodeTypes = {
custom: CustomNode
};
$: if (history) {
drawFlow();
}
$: if (history && history.currentId) {
focusNode();
}
const focusNode = async () => {
if (selectedMessageId === null) {
await fitView({ nodes: [{ id: history.currentId }] });
} else {
await fitView({ nodes: [{ id: selectedMessageId }] });
}
selectedMessageId = null;
};
const drawFlow = async () => {
const nodeList = [];
const edgeList = [];
const levelOffset = 150; // Vertical spacing between layers
const siblingOffset = 250; // Horizontal spacing between nodes at the same layer
// Map to keep track of node positions at each level
let positionMap = new Map();
// Helper function to truncate labels
function createLabel(content) {
const maxLength = 100;
return content.length > maxLength ? content.substr(0, maxLength) + '...' : content;
}
// Create nodes and map children to ensure alignment in width
let layerWidths = {}; // Track widths of each layer
Object.keys(history.messages).forEach((id) => {
const message = history.messages[id];
const level = message.parentId ? (positionMap.get(message.parentId)?.level ?? -1) + 1 : 0;
if (!layerWidths[level]) layerWidths[level] = 0;
positionMap.set(id, {
id: message.id,
level,
position: layerWidths[level]++
});
});
// Adjust positions based on siblings count to centralize vertical spacing
Object.keys(history.messages).forEach((id) => {
const pos = positionMap.get(id);
const xOffset = pos.position * siblingOffset;
const y = pos.level * levelOffset;
const x = xOffset;
nodeList.push({
id: pos.id,
type: 'custom',
data: {
user: $user,
message: history.messages[id],
model: $models.find((model) => model.id === history.messages[id].model)
},
position: { x, y }
});
// Create edges
const parentId = history.messages[id].parentId;
if (parentId) {
edgeList.push({
id: parentId + '-' + pos.id,
source: parentId,
target: pos.id,
selectable: false,
class: ' dark:fill-gray-300 fill-gray-300',
type: 'smoothstep',
animated: history.currentId === id || recurseCheckChild(id, history.currentId)
});
}
});
await edges.set([...edgeList]);
await nodes.set([...nodeList]);
};
const recurseCheckChild = (nodeId, currentId) => {
const node = history.messages[nodeId];
return (
node.childrenIds &&
node.childrenIds.some((id) => id === currentId || recurseCheckChild(id, currentId))
);
};
onMount(() => {
drawFlow();
nodesInitialized.subscribe(async (initialized) => {
if (initialized) {
await tick();
const res = await fitView({ nodes: [{ id: history.currentId }] });
}
});
width.subscribe((value) => {
if (value) {
// fitView();
fitView({ nodes: [{ id: history.currentId }] });
}
});
height.subscribe((value) => {
if (value) {
// fitView();
fitView({ nodes: [{ id: history.currentId }] });
}
});
});
onDestroy(() => {
console.log('Overview destroyed');
nodes.set([]);
edges.set([]);
});
</script>
<div class="w-full h-full relative">
<div class=" absolute z-50 w-full flex justify-between dark:text-gray-100 px-4 py-3.5">
<div class="flex items-center gap-2.5">
<button
class="self-center p-0.5"
on:click={() => {
showOverview.set(false);
}}
>
<ArrowLeft className="size-3.5" />
</button>
<div class=" text-lg font-medium self-center font-primary">{$i18n.t('Chat Overview')}</div>
</div>
<button
class="self-center p-0.5"
on:click={() => {
dispatch('close');
showOverview.set(false);
}}
>
<XMark className="size-3.5" />
</button>
</div>
{#if $nodes.length > 0}
<Flow
{nodes}
{nodeTypes}
{edges}
on:nodeclick={(e) => {
console.log(e.detail.node.data);
dispatch('nodeclick', e.detail);
selectedMessageId = e.detail.node.data.message.id;
fitView({ nodes: [{ id: selectedMessageId }] });
}}
/>
{/if}
</div>
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