eimi/scripts/code-block-differ.js at master · python273/eimi · GitHub

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class EimiScriptCodeBlockDiffer {

constructor({eimiApi}) {

this.eimiApi = eimiApi;

this.scriptState = window._scriptCodeDiffer = window._scriptCodeDiffer || {};

this.linesToKeep = 2; // top+bottom

this.addDiffLibrary();

this.eimiApi.createEmptyWindow({

title: "Code Block Diff",

height: window.innerHeight * 0.98,

left: 50,

onReady: (arg) => {

this.windowArgs = arg;

arg.el.innerHTML = `

<p>Focus on a message with code blocks to see diff</p>

</div>

if (this.scriptState.lastMessageId) {

this.updateDiffWindow();

}

});

this.focusHandler = (event) => {

if (!(event.target instanceof Element)) return;

const messageEl = event.target.closest('.message');

if (messageEl) {

const messageId = messageEl.dataset.id;

if (messageId) {

this.scriptState.lastMessageId = messageId;

this.updateDiffWindow();

}

};

document.addEventListener('focus', this.focusHandler, true);

}

addDiffLibrary() {

if (typeof Diff !== 'undefined') return;

const existingScript = document.querySelector('script[src="https://cdn.jsdelivr.net/npm/diff@5.1.0/dist/diff.min.js"]');

if (existingScript) return;

const script = document.createElement('script');

script.src = 'https://cdn.jsdelivr.net/npm/diff@5.1.0/dist/diff.min.js';

script.onerror = () => console.error("Failed to load diff library");

document.head.appendChild(script);

}

findMessagesWithCodeBlocks(messages) {

if (!this.scriptState.lastMessageId) return [];

const focusedMessage = messages.find(msg => msg.id === this.scriptState.lastMessageId);

if (!focusedMessage) return [];

const messagesWithCode = [];

let currentMessage = focusedMessage;

while (currentMessage) {

const codeBlocks = this.extractCodeBlocks(currentMessage.content);

if (codeBlocks.length > 0) {

messagesWithCode.push(currentMessage);

if (messagesWithCode.length >= 2) break;

}

if (currentMessage.parentId) {

currentMessage = messages.find(msg => msg.id === currentMessage.parentId);

} else {

currentMessage = null;

}

return messagesWithCode.reverse();

}

updateDiffWindow() {

if (!this.windowArgs) return;

const messages = this.eimiApi.getSessionMessages();

const messagesWithCode = this.findMessagesWithCodeBlocks(messages);

if (messagesWithCode.length < 2) {

this.windowArgs.el.querySelector('#diff-content').innerHTML = ''; // keep empty

return;

}

const [firstMessage, secondMessage] = messagesWithCode;

const firstCodeBlocks = this.extractCodeBlocks(firstMessage.content);

const secondCodeBlocks = this.extractCodeBlocks(secondMessage.content);

if (firstCodeBlocks.length === 0 || secondCodeBlocks.length === 0) {

this.windowArgs.el.querySelector('#diff-content').innerHTML =

'<p>No code blocks found in messages</p>';

return;

}

const code1 = firstCodeBlocks[firstCodeBlocks.length - 1];

const code2 = secondCodeBlocks[secondCodeBlocks.length - 1];

// Preserve scroll position of the entire window

let scrollTop = 0;

const diffContentEl = this.windowArgs.el.querySelector('#diff-content');

if (diffContentEl && diffContentEl.firstElementChild) {

scrollTop = diffContentEl.firstElementChild.scrollTop;

}

diffContentEl.innerHTML = this.createDiffView(code1, code2);

// Restore scroll position after updating content

if (diffContentEl && diffContentEl.firstElementChild) {

diffContentEl.firstElementChild.scrollTop = scrollTop;

}

extractCodeBlocks(content) {

const codeBlockRegex = /```[\s\S]*?```/g;

const matches = content.match(codeBlockRegex) || [];

return matches.map(block => block.slice(3, -3).trim());

}

createDiffView(code1, code2) {

if (typeof Diff === 'undefined') {

return "<p>Diff library not loaded. Please try again.</p>";

}

const escapeHtml = (unsafe) => {

return unsafe

.replace(/&/g, "&")

.replace(/</g, "<")

.replace(/>/g, ">")

.replace(/"/g, """)

.replace(/'/g, "'");

};

const truncateNonChangedBlock = (lines) => {

if (lines.length <= (this.linesToKeep * 2) + 1) {

return lines;

}

const top = lines.slice(0, this.linesToKeep);

const bottom = lines.slice(-this.linesToKeep-1);

return [...top, '[...]', ...bottom];

};

const diff = Diff.diffLines(code1, code2);

let result = '<div style="font-family: monospace; white-space: pre-wrap; word-break: break-all; height: 100%; overflow: auto; font-size: 0.85em; background: #000; padding: 0.5em;">';

diff.forEach(part => {

const color = part.added ? '#0f0' : part.removed ? '#ff6e04' : 'grey';

const bgColor = part.added ? '#00ff001f' : part.removed ? '#ff00001f' : 'transparent';

// For non-changed parts, truncate middle lines

let lines = part.value.split('\n')

if (!part.added && !part.removed) {

lines = truncateNonChangedBlock(lines);

}

// Escape HTML in the diff content

const escapedValue = lines.map(line => escapeHtml(line)).join('\n');

result += `<div style="color: ${color}; background-color: ${bgColor};">`;

result += escapedValue;

result += '</div>';

});

result += '</div>';

return result;

}

onDestroy() {

if (this.focusHandler) {

document.removeEventListener('focus', this.focusHandler, true);

}

this.windowArgs?.closeWindow();

}

return EimiScriptCodeBlockDiffer;

eimi/scripts/code-block-differ.js at master · python273/eimi · GitHub

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