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<script lang="ts">
import CodeMirror from '$lib/CodeMirror/CodeMirror.svelte';
import { EditorView, lineNumbers } from '@codemirror/view';
import CopyButton from '$lib/CopyButton/CopyButton.svelte';
import { javascript } from '@codemirror/lang-javascript';
import { linter, lintGutter, type Diagnostic } from '@codemirror/lint';
import LineWrapButton from '$lib/LineWrapButton/LineWrapButton.svelte';
import JSON5 from 'json5';
import type { FormattedChatTemplate } from '../ChatTemplateViewer/types';
import { getExampleHelloWorld } from '$lib/example-inputs/helloWorld';
import { onMount } from 'svelte';
import { getExampleToolUsage } from '$lib/example-inputs/toolUsage';
import { foldGutter } from '@codemirror/language';
import { getExampleReasoning } from '$lib/example-inputs/reasoning';
import { tooltip } from '$lib/utils/tooltip';
import IconRestart from '$lib/Icons/IconRestart.svelte';
import { createEventDispatcher } from 'svelte';
import { page } from '$app/stores';
import { transformInput } from '$lib/utils/transformInput';
export let content: Record<string, unknown> = {};
export let error = '';
export let selectedTemplate: FormattedChatTemplate | undefined = undefined;
export let selectedExampleInputId = '';
const dispatch = createEventDispatcher<{ exampleChange: void }>();
let value = JSON5.stringify(content, null, 2);
let wrapLines = true;
let exampleInputs: { id: string; label: string; content: Record<string, unknown> }[] = [];
let exampleValue = '';
async function handleUpdateEditor(e: CustomEvent{
const currentCode = e.detail;
try {
content = JSON5.parse(currentCode);
value = currentCode;
error = '';
} catch (e) {
console.error(e);
error = 'Error in input JSON';
}
}
function jsonLinter() {
return (view: EditorView): Diagnostic[] => {
const diagnostics: Diagnostic[] = [];
const text = view.state.doc.toString();
try {
// Attempt to parse the JSON5
JSON5.parse(text);
} catch (e) {
let pos = 0;
let errorMessage = '';
if (e && typeof e === 'object') {
errorMessage = e.message || '';
// Prefer JSON5 error properties if available
const line = e.lineNumber;
const column = e.columnNumber;
if (typeof line === 'number' && typeof column === 'number') {
// Convert line/column to character offset
let runningPos = 0;
let currentLine = 1;
for (let i = 0; i < text.length; i++) {
if (currentLine === line && runningPos === column - 1) {
pos = i;
break;
}
if (text[i] === '\n') {
currentLine++;
runningPos = 0;
} else {
runningPos++;
}
}
} else {
// Fallback: try to extract from message
const match = /at position (\d+)/.exec(errorMessage);
if (match) {
pos = parseInt(match[1], 10);
} else {
const lineMatch = /line (\d+) column (\d+)/.exec(errorMessage);
if (lineMatch) {
const l = parseInt(lineMatch[1], 10);
const c = parseInt(lineMatch[2], 10);
let runningPos = 0;
let currentLine = 1;
for (let i = 0; i < text.length; i++) {
if (currentLine === l && runningPos === c - 1) {
pos = i;
break;
}
if (text[i] === '\n') {
currentLine++;
runningPos = 0;
} else {
runningPos++;
}
}
}
}
}
}
diagnostics.push({
from: Math.max(0, pos - 1),
to: Math.min(text.length, pos + 1),
severity: 'error',
message: `JSON Error: ${errorMessage}`
});
}
return diagnostics;
};
}
function handleExampleInputChange(e: Event) {
const target = e.target as HTMLSelectElement;
const selectedId = target.value;
const selectedExampleInput = exampleInputs.find(
(exampleInput) => exampleInput.id === selectedId
);
if (selectedExampleInput) {
selectedExampleInputId = selectedId;
content = selectedExampleInput.content;
value = JSON5.stringify(content, null, 2);
exampleValue = value;
dispatch('exampleChange');
}
}
onMount(() => {
if (selectedTemplate) {
const exampleHelloWorld = getExampleHelloWorld(selectedTemplate.template);
if (exampleHelloWorld) {
exampleInputs = [
...exampleInputs,
{
id: 'hello-world',
label: 'hello world example',
content: transformInput(exampleHelloWorld, selectedTemplate.template)
}
];
}
const exampleReasoning = getExampleReasoning(selectedTemplate.template);
if (exampleReasoning) {
exampleInputs = [
...exampleInputs,
{
id: 'reasoning',
label: 'reasoning example',
content: transformInput(exampleReasoning, selectedTemplate.template)
}
];
}
const exampleToolUsage = getExampleToolUsage(selectedTemplate.template);
if (exampleToolUsage) {
exampleInputs = [
...exampleInputs,
{
id: 'tool-usage',
label: 'tool usage example',
content: transformInput(exampleToolUsage, selectedTemplate.template)
}
];
}
const exampleFromQuery = $page.url.searchParams.get('example');
if (exampleFromQuery) {
const exampleInput = exampleInputs.find(
(exampleInput) => exampleInput.id === exampleFromQuery
);
if (exampleInput) {
content = exampleInput.content;
value = JSON5.stringify(content, null, 2);
exampleValue = value;
selectedExampleInputId = exampleInput.id;
return;
}
}
content = exampleInputs.at(-1)?.content ?? {};
selectedExampleInputId = exampleInputs.at(-1)?.id ?? '';
value = JSON5.stringify(content, null, 2);
exampleValue = value;
}
});
</script>
<div class="h-full overflow-scroll bg-white dark:bg-gray-900">
<div class="sticky top-0 z-10 bg-white dark:bg-gray-900">
<div
class="text-semibold flex items-center gap-x-2 border-b border-gray-500 bg-linear-to-r from-orange-200 to-white px-3 py-1.5 text-lg dark:from-orange-700 dark:to-orange-900 dark:text-gray-200"
>
JSON Input
{#if exampleInputs.length > 1}
<select
class="ml-auto rounded border px-1 py-0.5 text-sm"
on:change={handleExampleInputChange}
>
{#each exampleInputs as exampleInput}
<option value={exampleInput.id} selected={exampleInput.id === selectedExampleInputId}
>{exampleInput.label}</option
>
{/each}
</select>
{/if}
</div>
<div class="flex items-center border-b px-3 py-2">
<div class="ml-auto flex items-center gap-x-2">
<!-- reset button -->
{#if exampleValue && exampleValue !== value}
<button
class="relative inline-flex h-6! cursor-pointer items-center justify-center rounded-md border border-gray-500 bg-white p-0! px-1.5! text-sm shadow-xs focus:outline-hidden dark:bg-gray-900 dark:text-white [&_svg]:translate-x-px! [&_svg]:translate-y-px! [&_svg]:text-base!"
type="button"
on:click={() => {
value = exampleValue;
}}
use:tooltip={'Reset example to original'}
><IconRestart classNames="dark:text-gray-200!" />
<span class="ml-1 text-sm select-none dark:text-gray-200!"> Reset </span>
</button>
{/if}
<CopyButton
label="Copy"
{value}
style="button-clear"
classNames="h-6! [&_svg]:text-[0.7rem]! px-1.5! text-black! dark:text-gray-200!"
/>
<LineWrapButton
style="button-clear"
bind:wrapLines
classNames="[&_svg]:text-xs! size-6! p-0!"
/>
</div>
</div>
</div>
<CodeMirror
{value}
on:change={handleUpdateEditor}
extensions={[
lineNumbers(),
javascript({ jsx: false, typescript: false }),
linter(jsonLinter()),
lintGutter(),
foldGutter(),
...[wrapLines ? [EditorView.lineWrapping] : []]
]}
/>
</div>
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