jtricerolph
8d688b459d
FastAPI backend (Python 3.11, MSSQL ODBC for SambaPOS, Azure DI OCR),
kitchen_db on central PG. React/TS/Vite frontend with navy sidebar layout.
Backend: auth.py (APP_SLUG=kitchen, SimpleNamespace — archive routes use
.kitchen_id/.is_admin without modification), main.py (51 migrations, scheduler,
internal router for KDS bookings feed), api/internal.py, full archive API
(31 routers: invoices, recipes, menus, sambapos, resos, newbook, disputes,
purchase_orders, etc.), models, migrations, OCR pipeline.
kitchen_id pinned to 1 (B1 — single hotel).
Frontend: AuthGate (app=kitchen, token shim for archive compat — B5b pending),
Layout (navy sidebar, 6 sections, Lucide icons, teal --app-primary),
App.tsx (Outlet pattern, UploadApp outside Layout), index.css (full :root block).
strict: false — archive components have type issues; build clean.
Note: 45 archive components call fetch('/api/...') without /kitchen/ prefix
(B5b). Runtime 404s; deferred until after initial testing.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
70 lines
2 KiB
TypeScript
70 lines
2 KiB
TypeScript
import UPNG from '@pdf-lib/upng';
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const getImageType = (ctype: number) => {
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if (ctype === 0) return PngType.Greyscale;
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if (ctype === 2) return PngType.Truecolour;
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if (ctype === 3) return PngType.IndexedColour;
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if (ctype === 4) return PngType.GreyscaleWithAlpha;
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if (ctype === 6) return PngType.TruecolourWithAlpha;
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throw new Error(`Unknown color type: ${ctype}`);
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};
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const splitAlphaChannel = (rgbaChannel: Uint8Array) => {
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const pixelCount = Math.floor(rgbaChannel.length / 4);
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const rgbChannel = new Uint8Array(pixelCount * 3);
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const alphaChannel = new Uint8Array(pixelCount * 1);
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let rgbaOffset = 0;
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let rgbOffset = 0;
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let alphaOffset = 0;
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while (rgbaOffset < rgbaChannel.length) {
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rgbChannel[rgbOffset++] = rgbaChannel[rgbaOffset++];
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rgbChannel[rgbOffset++] = rgbaChannel[rgbaOffset++];
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rgbChannel[rgbOffset++] = rgbaChannel[rgbaOffset++];
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alphaChannel[alphaOffset++] = rgbaChannel[rgbaOffset++];
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}
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return { rgbChannel, alphaChannel };
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};
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export enum PngType {
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Greyscale = 'Greyscale',
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Truecolour = 'Truecolour',
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IndexedColour = 'IndexedColour',
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GreyscaleWithAlpha = 'GreyscaleWithAlpha',
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TruecolourWithAlpha = 'TruecolourWithAlpha',
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}
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export class PNG {
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static load = (pngData: Uint8Array) => new PNG(pngData);
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readonly rgbChannel: Uint8Array;
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readonly alphaChannel?: Uint8Array;
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readonly type: PngType;
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readonly width: number;
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readonly height: number;
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readonly bitsPerComponent: number;
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private constructor(pngData: Uint8Array) {
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const upng = UPNG.decode(pngData);
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const frames = UPNG.toRGBA8(upng);
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if (frames.length > 1) throw new Error(`Animated PNGs are not supported`);
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const frame = new Uint8Array(frames[0]);
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const { rgbChannel, alphaChannel } = splitAlphaChannel(frame);
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this.rgbChannel = rgbChannel;
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const hasAlphaValues = alphaChannel.some((a) => a < 255);
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if (hasAlphaValues) this.alphaChannel = alphaChannel;
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this.type = getImageType(upng.ctype);
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this.width = upng.width;
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this.height = upng.height;
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this.bitsPerComponent = 8;
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}
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}
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