#!/usr/bin/env node

const fs = require("fs");

const path = require("path");

const { spawn } = require("child_process");

const referenceDir = path.join(__dirname, "../reference_screenshots");

const referencePath = path.join(referenceDir, "notion_reference.png");

if (!fs.existsSync(referencePath)) {

console.error("Reference screenshot not found:", referencePath);

process.exit(1);

}

// Create split directory

const splitDir = path.join(referenceDir, "split");

if (!fs.existsSync(splitDir)) {

fs.mkdirSync(splitDir, { recursive: true });

}

async function splitReference() {

console.log("Splitting reference screenshot into 16:9 segments...");

// First, get image dimensions using imagemagick identify

const identify = spawn("identify", ["-format", "%wx%h", referencePath]);

let dimensions = "";

identify.stdout.on("data", (data) => {

dimensions += data.toString();

});

await new Promise((resolve, reject) => {

identify.on("close", (code) => {

if (code === 0) {

resolve();

} else {

reject(new Error(`Failed to get image dimensions: ${code}`));

}

});

});

const [width, height] = dimensions.trim().split("x").map(Number);

console.log(`Reference image dimensions: ${width}x${height}`);

// Calculate 16:9 aspect ratio segments

const segmentWidth = 1200; // Standard width

const segmentHeight = Math.floor(segmentWidth * (9 / 16)); // 675px for 16:9 ratio

const segments = Math.ceil(height / segmentHeight);

console.log(

`Creating ${segments} segments with 16:9 aspect ratio (${segmentWidth}x${segmentHeight})`

);

for (let i = 0; i < segments; i++) {

const startY = i * segmentHeight;

const actualHeight = Math.min(segmentHeight, height - startY);

console.log(

`Creating segment ${i + 1}/${segments} (y: ${startY}, height: ${actualHeight})`

);

const outputPath = path.join(

splitDir,

`reference_segment_${String(i + 1).padStart(2, "0")}.png`

);

// Use imagemagick convert to crop the image

const convert = spawn("convert", [

referencePath,

"-crop",

`${segmentWidth}x${actualHeight}+0+${startY}`,

"+repage",

outputPath,

]);

await new Promise((resolve, reject) => {

convert.on("close", (code) => {

if (code === 0) {

console.log(`Saved: ${outputPath}`);

resolve();

} else {

reject(new Error(`Failed to create segment ${i + 1}: ${code}`));

}

});

});

}

console.log("Reference screenshot split completed");

}

splitReference().catch(console.error);