Sathira Sri Sathara
ad9287b804
- Introduced authenticated shopping state and atomic checkout process without creating orders or payments. - Reused existing components from previous phases including identities, addresses, catalogues, pricing, and inventory. - Developed cart architecture to support one active cart per user with unique items per variant. - Implemented dynamic cart pricing with various precedence rules for promotions and coupons. - Created a wishlist feature that exposes only visible active products without reserving inventory. - Integrated inventory validation to ensure availability of items before adding to cart. - Developed a checkout architecture that locks the cart, revalidates pricing and shipping, and reserves inventory. - Added shipping zones, methods, and rates with configurable options for international shipping and duty/tax boundaries. - Implemented checkout snapshots to capture immutable checkout details. - Introduced idempotency for checkout requests to prevent duplicate processing. - Added functionality for coupon integration and business checkout validation. - Established permissions for managing shipping zones, methods, and rates. - Created comprehensive unit tests covering various aspects of the shopping and checkout processes. - Added cron job for handling checkout expiry reconciliation. - Created migration script to set up new database tables and constraints for carts, checkout sessions, and shipping.
7 lines
885 B
JavaScript
7 lines
885 B
JavaScript
const parse = value => { const match = String(value).match(/^(\d+)(?:\.(\d{1,2}))?$/); if (!match) throw Object.assign(new Error("Invalid money"), { code: "INVALID_MONEY", status: 400 }); return BigInt(match[1]) * 100n + BigInt((match[2] || "").padEnd(2, "0")); };
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const format = cents => `${cents / 100n}.${String(cents % 100n).padStart(2, "0")}`;
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const subtractFloor = (a, b) => format(parse(a) > parse(b) ? parse(a) - parse(b) : 0n);
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const percentOff = (amount, percent) => { const [whole,fraction=""] = String(percent).split("."); const basis = BigInt(whole) * 100n + BigInt(fraction.padEnd(2,"0")); return format(parse(amount) * basis / 10000n); };
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const add=(...values)=>format(values.reduce((sum,value)=>sum+parse(value),0n));const multiply=(amount,quantity)=>format(parse(amount)*BigInt(quantity));
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module.exports = { parse, format, subtractFloor, percentOff, add, multiply };
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