feat: auto-extract color from logo + PHP extension check

Added extractDominantColor() JS function that picks the dominant
color from uploaded logo and suggests it as theme color.
Updated gdcheck.php to show all needed extensions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

gdcheck.php

@@ -1,6 +1,15 @@
 <?php
-echo "GD: " . (extension_loaded('gd') ? 'KYLLÄ' : 'EI') . "\n";
-echo "Imagick: " . (extension_loaded('imagick') ? 'KYLLÄ' : 'EI') . "\n";
-if (extension_loaded('gd')) {
-    echo "GD info: " . json_encode(gd_info()) . "\n";
+echo "PHP " . PHP_VERSION . " (" . php_sapi_name() . ")\n";
+echo "php.ini: " . php_ini_loaded_file() . "\n\n";
+
+$check = ['pdo', 'pdo_mysql', 'gd', 'imagick', 'fileinfo', 'mbstring', 'curl', 'openssl', 'json', 'session', 'mysqli', 'imap', 'zip', 'xml', 'dom', 'simplexml'];
+echo "=== Tarvittavat laajennukset ===\n";
+foreach ($check as $ext) {
+    echo ($ext . ': ' . str_pad('', 15 - strlen($ext)) . (extension_loaded($ext) ? '✅ KYLLÄ' : '❌ EI')) . "\n";
 }
+echo "\n=== Kaikki ladatut ===\n";
+echo implode(', ', get_loaded_extensions()) . "\n";
+
+echo "\n=== Lisätietojen ini-polut ===\n";
+$scanDir = php_ini_scanned_files();
+echo $scanDir ?: "(ei skannattu lisä-ini-tiedostoja)\n";

script.js

@@ -1884,11 +1884,69 @@ document.getElementById('company-edit-color-text').addEventListener('input', fun
     }
 });
 
-// Logo-upload
+// Poimi hallitseva väri kuvasta (canvas)
+function extractDominantColor(file) {
+    return new Promise((resolve) => {
+        const img = new Image();
+        const url = URL.createObjectURL(file);
+        img.onload = () => {
+            const canvas = document.createElement('canvas');
+            const size = 50; // Pieni koko nopeuttaa
+            canvas.width = size;
+            canvas.height = size;
+            const ctx = canvas.getContext('2d');
+            ctx.drawImage(img, 0, 0, size, size);
+            const pixels = ctx.getImageData(0, 0, size, size).data;
+            URL.revokeObjectURL(url);
+
+            // Laske värien esiintymät (ryhmiteltynä 32-askeleen tarkkuudella)
+            const colorCounts = {};
+            for (let i = 0; i < pixels.length; i += 4) {
+                const r = pixels[i], g = pixels[i+1], b = pixels[i+2], a = pixels[i+3];
+                if (a < 128) continue; // Ohita läpinäkyvät
+                // Ohita lähes valkoiset, mustat ja harmaat
+                const max = Math.max(r, g, b), min = Math.min(r, g, b);
+                const saturation = max === 0 ? 0 : (max - min) / max;
+                if (max > 230 && min > 200) continue; // Valkoinen
+                if (max < 30) continue; // Musta
+                if (saturation < 0.15 && max > 60) continue; // Harmaa
+                // Ryhmittele
+                const qr = Math.round(r / 32) * 32;
+                const qg = Math.round(g / 32) * 32;
+                const qb = Math.round(b / 32) * 32;
+                const key = `${qr},${qg},${qb}`;
+                colorCounts[key] = (colorCounts[key] || 0) + 1;
+            }
+
+            // Etsi yleisin
+            let bestKey = null, bestCount = 0;
+            for (const [key, count] of Object.entries(colorCounts)) {
+                if (count > bestCount) { bestCount = count; bestKey = key; }
+            }
+
+            if (bestKey) {
+                const [r, g, b] = bestKey.split(',').map(Number);
+                const hex = '#' + [r, g, b].map(v => Math.min(255, v).toString(16).padStart(2, '0')).join('');
+                resolve(hex);
+            } else {
+                resolve(null); // Ei löytynyt selkeää väriä
+            }
+        };
+        img.onerror = () => { URL.revokeObjectURL(url); resolve(null); };
+        img.src = url;
+    });
+}
+
+// Logo-upload — poimi väri automaattisesti
 document.getElementById('company-logo-upload').addEventListener('change', async function() {
     if (!this.files[0] || !currentCompanyDetail) return;
+    const file = this.files[0];
+
+    // Poimi väri logosta ennen uploadia
+    const dominantColor = await extractDominantColor(file);
+
     const formData = new FormData();
-    formData.append('logo', this.files[0]);
+    formData.append('logo', file);
     formData.append('company_id', currentCompanyDetail);
     try {
         const res = await fetch('api.php?action=company_logo_upload', { method: 'POST', body: formData, credentials: 'include' });
@@ -1901,6 +1959,20 @@ document.getElementById('company-logo-upload').addEventListener('change', async
         // Päivitä paikallinen data
         const comp = companiesTabData.find(c => c.id === currentCompanyDetail);
         if (comp) comp.logo_file = data.logo_file;
+
+        // Aseta logosta poimittu väri teemaväriksi
+        if (dominantColor) {
+            const colorInput = document.getElementById('company-edit-color');
+            if (colorInput) {
+                colorInput.value = dominantColor;
+                // Näytä ilmoitus
+                const msg = document.createElement('span');
+                msg.textContent = ` Väri ${dominantColor} poimittu logosta`;
+                msg.style.cssText = 'color:#27ae60;font-size:0.85rem;margin-left:8px;';
+                colorInput.parentElement.appendChild(msg);
+                setTimeout(() => msg.remove(), 4000);
+            }
+        }
     } catch (e) { alert(e.message); }
     this.value = ''; // Reset file input
 });