"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ETagInterceptor = void 0;
const common_1 = require("@nestjs/common");
const operators_1 = require("rxjs/operators");
let ETagInterceptor = class ETagInterceptor {
    intercept(context, next) {
        const ctx = context.switchToHttp();
        const response = ctx.getResponse();
        return next.handle().pipe((0, operators_1.map)((data) => {
            if (data?.updatedAt) {
                response.setHeader('ETag', String(new Date(data.updatedAt).getTime()));
                return data;
            }
            if (Array.isArray(data) && data.length) {
                const ts = data
                    .map((d) => (d?.updatedAt ? new Date(d.updatedAt).getTime() : null))
                    .filter((n) => Number.isFinite(n));
                if (ts.length)
                    response.setHeader('ETag', `W/"${Math.max(...ts)}"`);
            }
            return data;
        }));
    }
};
exports.ETagInterceptor = ETagInterceptor;
exports.ETagInterceptor = ETagInterceptor = __decorate([
    (0, common_1.Injectable)()
], ETagInterceptor);
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