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eienmojiki
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•
eaac59e
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Parent(s):
d70bd9a
Upload 2 files
Browse files- package.json +19 -0
- server.js +280 -0
package.json
ADDED
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{
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"name": "quote-gen",
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"version": "1.0.0",
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"description": "",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"keywords": [],
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"author": "",
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"license": "ISC",
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"dependencies": {
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"canvas": "^2.10.2",
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"cors": "^2.8.5",
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"express": "^4.21.2",
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"fs": "^0.0.1-security",
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"path": "^0.12.7"
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}
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}
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server.js
ADDED
@@ -0,0 +1,280 @@
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const express = require("express");
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const cors = require("cors");
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const { createCanvas, registerFont } = require("canvas");
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const path = require("path");
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const fs = require("fs");
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const app = express();
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app.use(cors());
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app.use(express.json());
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app.use(express.static("public"));
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// Create fonts directory if it doesn't exist
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const fontsDir = path.join(__dirname, "fonts");
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if (!fs.existsSync(fontsDir)) {
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fs.mkdirSync(fontsDir);
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}
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// Store available fonts and their variations
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const availableFonts = new Map();
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function initializeFonts() {
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if (!fs.existsSync(fontsDir)) {
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console.log(
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"Created fonts directory. Please add font files (.ttf or .otf) to the fonts folder."
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);
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return;
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}
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const fontFiles = fs
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.readdirSync(fontsDir)
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.filter(
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(file) =>
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file.toLowerCase().endsWith(".ttf") ||
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file.toLowerCase().endsWith(".otf")
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);
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fontFiles.forEach((file) => {
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const fontPath = path.join(fontsDir, file);
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const fontName = file.replace(/\.(ttf|otf)$/i, "");
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// Parse font variations (Regular, Bold, Italic, etc.)
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let weight = "normal";
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let style = "normal";
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const lowerFontName = fontName.toLowerCase();
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if (lowerFontName.includes("bold")) weight = "bold";
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if (lowerFontName.includes("light")) weight = "light";
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if (lowerFontName.includes("medium")) weight = "medium";
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if (lowerFontName.includes("italic")) style = "italic";
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// Register font with canvas
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registerFont(fontPath, {
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family: fontName.split("-")[0], // Get base font name
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weight,
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style,
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});
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// Store font info
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const familyName = fontName.split("-")[0];
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if (!availableFonts.has(familyName)) {
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availableFonts.set(familyName, []);
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}
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availableFonts.get(familyName).push({
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fullName: fontName,
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weight,
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style,
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});
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});
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console.log("Available font families:", Array.from(availableFonts.keys()));
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}
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// Initialize fonts
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initializeFonts();
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// Store requests history
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let requestsHistory = [];
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function generateQuoteImage(ctx, canvas, data) {
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const {
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text,
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author,
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bgColor,
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barColor,
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textColor,
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authorColor,
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quoteFontFamily,
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quoteFontWeight,
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quoteFontStyle,
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authorFontFamily,
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authorFontWeight,
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authorFontStyle,
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barWidth = 4,
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} = data;
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// Constants for layout
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const margin = 80;
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const quoteMarkSize = 120;
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const padding = 30;
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const lineHeight = 50;
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// Clear canvas
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ctx.fillStyle = bgColor;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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// Draw bars
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ctx.fillStyle = barColor;
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ctx.fillRect(margin, margin, barWidth, canvas.height - margin * 2);
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ctx.fillRect(
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canvas.width - margin - barWidth,
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margin,
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barWidth,
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canvas.height - margin * 2
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);
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// Set up quote font
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ctx.fillStyle = barColor;
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const quoteMarkFont = [];
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if (quoteFontStyle === "italic") quoteMarkFont.push("italic");
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quoteMarkFont.push(quoteFontWeight);
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quoteMarkFont.push(`${quoteMarkSize}px`);
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quoteMarkFont.push(`"${quoteFontFamily}"`);
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ctx.font = quoteMarkFont.join(" ");
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ctx.textBaseline = "top";
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// Calculate quote mark metrics
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const quoteMarkWidth = ctx.measureText('"').width;
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const textStartX = margin + barWidth + padding + quoteMarkWidth + padding;
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const textEndX = canvas.width - margin - barWidth - padding * 2;
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const maxWidth = textEndX - textStartX;
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// Set up quote text font
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ctx.fillStyle = textColor;
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const quoteFont = [];
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if (quoteFontStyle === "italic") quoteFont.push("italic");
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quoteFont.push(quoteFontWeight);
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quoteFont.push("36px");
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quoteFont.push(`"${quoteFontFamily}"`);
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ctx.font = quoteFont.join(" ");
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// Word wrap text
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const words = text.split(" ");
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const lines = [];
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let currentLine = "";
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for (let word of words) {
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const testLine = currentLine + (currentLine ? " " : "") + word;
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const metrics = ctx.measureText(testLine);
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if (metrics.width > maxWidth) {
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if (currentLine) {
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lines.push(currentLine);
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currentLine = word;
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} else {
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currentLine = word;
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}
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} else {
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currentLine = testLine;
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}
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}
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if (currentLine) {
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lines.push(currentLine);
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}
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// Calculate total height of text block
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const totalTextHeight = lines.length * lineHeight;
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const authorHeight = 60; // Space reserved for author
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const availableHeight = canvas.height - margin * 2;
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// Calculate starting Y position to center text block
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let startY =
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margin + (availableHeight - (totalTextHeight + authorHeight)) / 2;
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// Draw quote mark at the same vertical position as first line
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ctx.fillStyle = barColor;
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ctx.font = quoteMarkFont.join(" ");
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ctx.fillText('"', margin + barWidth + padding, startY);
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// Draw quote lines
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ctx.fillStyle = textColor;
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ctx.font = quoteFont.join(" ");
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lines.forEach((line, index) => {
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ctx.fillText(line.trim(), textStartX, startY + index * lineHeight);
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});
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// Draw author below the quote
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ctx.fillStyle = authorColor;
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const authorFont = [];
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if (authorFontStyle === "italic") authorFont.push("italic");
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authorFont.push(authorFontWeight);
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authorFont.push("28px");
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authorFont.push(`"${authorFontFamily}"`);
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ctx.font = authorFont.join(" ");
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// Ensure author doesn't overflow
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let authorText = `- ${author}`;
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let authorMetrics = ctx.measureText(authorText);
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if (authorMetrics.width > maxWidth) {
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const ellipsis = "...";
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while (authorMetrics.width > maxWidth && author.length > 0) {
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author = author.slice(0, -1);
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authorText = `- ${author}${ellipsis}`;
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authorMetrics = ctx.measureText(authorText);
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}
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}
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// Position author text below quote with spacing
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const authorY = startY + totalTextHeight + 40;
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ctx.fillText(authorText, textStartX, authorY);
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}
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// API Endpoints
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app.get("/api/fonts", (req, res) => {
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const fontDetails = Array.from(availableFonts.entries()).map(
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([family, variations]) => ({
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family,
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variations: variations.map((v) => ({
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weight: v.weight,
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style: v.style,
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fullName: v.fullName,
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})),
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})
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);
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res.json(fontDetails);
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});
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app.post("/api/generate-quote", (req, res) => {
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try {
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const data = req.body;
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// Validate fonts exist
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if (!availableFonts.has(data.quoteFontFamily)) {
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throw new Error("Selected quote font is not available");
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}
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if (!availableFonts.has(data.authorFontFamily)) {
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throw new Error("Selected author font is not available");
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}
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// Store request
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requestsHistory.unshift({
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timestamp: new Date(),
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request: data,
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});
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// Keep only last 10 requests
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requestsHistory = requestsHistory.slice(0, 10);
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// Create canvas
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const canvas = createCanvas(1200, 675); // 16:9 ratio
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const ctx = canvas.getContext("2d");
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// Generate quote image
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generateQuoteImage(ctx, canvas, data);
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// Send response
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res.json({
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success: true,
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imageUrl: canvas.toDataURL(),
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timestamp: new Date().toISOString(),
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});
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} catch (error) {
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console.error("Error generating quote:", error);
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res.status(500).json({
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success: false,
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error: error.message,
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});
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267 |
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}
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268 |
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});
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269 |
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app.get("/api/requests-history", (req, res) => {
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res.json(requestsHistory);
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272 |
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});
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273 |
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// Start server
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275 |
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const PORT = process.env.PORT || 3000;
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app.listen(PORT, () => {
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console.log(`Server running on port ${PORT}`);
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console.log(`View the application at http://localhost:${PORT}`);
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console.log("Available fonts:", Array.from(availableFonts.keys()));
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});
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