mirror of
https://github.com/Tria-plc/edr-platform.git
synced 2026-08-29 19:58:11 +00:00
277 lines
10 KiB
TypeScript
277 lines
10 KiB
TypeScript
import { BadRequestException, Injectable, NotFoundException } from "@nestjs/common";
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import { randomUUID } from "node:crypto";
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import { ContractRendererService } from "../../contracts/contract-renderer.service";
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import { getTemplateMeta } from "../../contracts/contract-template.registry";
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import {
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ContractDynamicTemplateView,
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ContractViewModel,
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} from "../../contracts/contract-view-model.builder";
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import { ContractTemplatesRepository } from "./contract-templates.repository";
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import {
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CreateArticleDto,
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PreviewContractTemplateDto,
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ReplaceArticleDto,
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UpdateArticleDto,
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UpdateContractTemplateDto,
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} from "./dto/contract-template.dto";
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import {
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CONTRACT_TEMPLATE_CODES,
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ContractTemplate,
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ContractTemplateArticle,
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ContractTemplateCode,
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contractTemplateCodeFor,
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} from "./entities/contract-template.entity";
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/** Registry keys used to derive labels for the mock preview per template code. */
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const PREVIEW_TEMPLATE_KEYS: Record<ContractTemplateCode, string> = {
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IMPORT_BULK: "IMP_BULK_USD_FORWARDING",
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EXPORT_BULK: "EXP_BULK_USD_TRANSPORT_ONLY",
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INTERCITY_BULK: "DOM_BULK_USD_TRANSPORT_ONLY",
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IMPORT_CONTAINER: "IMP_CON_USD_TRANSPORT_ONLY",
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EXPORT_CONTAINER: "EXP_CON_USD_FORWARDING",
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INTERCITY_CONTAINER: "DOM_CON_USD_TRANSPORT_ONLY",
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};
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@Injectable()
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export class ContractTemplatesService {
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constructor(
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private readonly repository: ContractTemplatesRepository,
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private readonly renderer: ContractRendererService,
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) {}
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async list(): Promise<ContractTemplate[]> {
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const templates = await this.repository.findAll();
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const rank = new Map(CONTRACT_TEMPLATE_CODES.map((code, i) => [code, i] as const));
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return templates.sort(
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(a, b) => (rank.get(a.code) ?? 99) - (rank.get(b.code) ?? 99),
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);
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}
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async getByCode(code: string): Promise<ContractTemplate> {
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const template = await this.repository.findByCode(this.assertCode(code));
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if (!template) {
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throw new NotFoundException(`Contract template ${code} not found`);
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}
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return template;
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}
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/**
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* The active template used when generating a contract document for the given
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* direction/freight pair; null when missing or deactivated (the renderer then
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* falls back to the built-in generic layout).
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*/
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async findActiveForContract(
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tradeDirection?: string | null,
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freightType?: string | null,
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): Promise<ContractTemplate | null> {
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const code = contractTemplateCodeFor(tradeDirection, freightType);
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const template = await this.repository.findByCode(code);
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return template?.isActive ? template : null;
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}
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async update(code: string, dto: UpdateContractTemplateDto): Promise<ContractTemplate> {
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const template = await this.getByCode(code);
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if (dto.name !== undefined) template.name = dto.name;
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if (dto.description !== undefined) template.description = dto.description;
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if (dto.documentTitle !== undefined) template.documentTitle = dto.documentTitle;
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if (dto.whereasClauses !== undefined) template.whereasClauses = dto.whereasClauses;
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if (dto.isActive !== undefined) template.isActive = dto.isActive;
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return this.repository.saveTemplate(template);
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}
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async addArticle(code: string, dto: CreateArticleDto): Promise<ContractTemplate> {
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const template = await this.getByCode(code);
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const articles = this.sorted(template.articles);
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const article: ContractTemplateArticle = {
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id: randomUUID(),
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title: dto.title,
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body: dto.body,
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order: 0,
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};
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const index =
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dto.position && dto.position <= articles.length ? dto.position - 1 : articles.length;
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articles.splice(index, 0, article);
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template.articles = this.renumber(articles);
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return this.repository.saveTemplate(template);
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}
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async updateArticle(
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code: string,
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articleId: string,
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dto: UpdateArticleDto,
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): Promise<ContractTemplate> {
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const template = await this.getByCode(code);
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const article = template.articles.find((item) => item.id === articleId);
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if (!article) {
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throw new NotFoundException(`Article ${articleId} not found on template ${code}`);
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}
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if (dto.title !== undefined) article.title = dto.title;
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if (dto.body !== undefined) article.body = dto.body;
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template.articles = this.renumber(this.sorted(template.articles));
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return this.repository.saveTemplate(template);
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}
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async removeArticle(code: string, articleId: string): Promise<ContractTemplate> {
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const template = await this.getByCode(code);
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const remaining = template.articles.filter((item) => item.id !== articleId);
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if (remaining.length === template.articles.length) {
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throw new NotFoundException(`Article ${articleId} not found on template ${code}`);
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}
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template.articles = this.renumber(this.sorted(remaining));
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return this.repository.saveTemplate(template);
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}
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/** Replace the full ordered article list (also how the editor reorders). */
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async replaceArticles(
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code: string,
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articles: ReplaceArticleDto[],
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): Promise<ContractTemplate> {
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const template = await this.getByCode(code);
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template.articles = this.renumber(
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articles.map((item) => ({
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id: item.id ?? randomUUID(),
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title: item.title,
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body: item.body,
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order: 0,
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})),
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);
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return this.repository.saveTemplate(template);
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}
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/**
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* Render the template against a representative mock contract so admins can
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* see the final document without touching a real contract. Draft overrides
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* allow previewing unsaved editor state.
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*/
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async preview(
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code: string,
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overrides?: PreviewContractTemplateDto,
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): Promise<{ html: string }> {
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const template = await this.getByCode(code);
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const dynamicTemplate: ContractDynamicTemplateView = {
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code: template.code,
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name: overrides?.name ?? template.name,
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documentTitle: overrides?.documentTitle ?? template.documentTitle,
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whereasClauses: overrides?.whereasClauses ?? template.whereasClauses,
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articles: overrides?.articles
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? overrides.articles.map((item, index) => ({
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id: item.id ?? randomUUID(),
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title: item.title,
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body: item.body,
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order: index + 1,
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}))
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: this.sorted(template.articles),
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};
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const view = this.buildMockView(template.code, dynamicTemplate);
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return { html: this.renderer.render(view) };
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}
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private buildMockView(
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code: ContractTemplateCode,
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dynamicTemplate: ContractDynamicTemplateView,
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): ContractViewModel {
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const meta = getTemplateMeta(PREVIEW_TEMPLATE_KEYS[code]);
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const isBulk = code.endsWith("_BULK");
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const now = new Date();
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const unitRates = isBulk
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? [
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{ label: "Rail transport — per metric ton", unitPrice: 59.4, unit: "ton", currency: "USD" },
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{ label: "Origin handling and documentation", unitPrice: 18, unit: "ton", currency: "USD" },
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{ label: "Lashing material (when provided by EDR)", unitPrice: 150, unit: "unit", currency: "USD" },
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]
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: [
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{ label: "Rail transport — 40ft container", unitPrice: 1916, unit: "container", currency: "USD" },
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{ label: "Rail transport — 2 × 20ft containers", unitPrice: 1944, unit: "container", currency: "USD" },
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{ label: "Excess tonnage surcharge", unitPrice: 10, unit: "ton", currency: "USD" },
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];
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return {
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bookingId: "00000000-0000-0000-0000-000000000000",
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reference: "EDR/CT/2026/0042",
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status: "CONTRACT_READY",
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templateKey: PREVIEW_TEMPLATE_KEYS[code],
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template: { ...meta, title: dynamicTemplate.name, templateFile: "edr-dynamic.hbs" },
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contractDate: now.toLocaleDateString("en-GB", {
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day: "numeric",
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month: "long",
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year: "numeric",
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}),
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contractYear: now.getFullYear(),
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client: {
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companyName: "Abyssinia Trading PLC",
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companyAddress: "Bole Sub-city, Woreda 03, H.No 1234, Addis Ababa",
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companyLocation: "Ethiopia",
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phone: "+251 91 123 4567",
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email: "logistics@abyssiniatrading.et",
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tinNumber: "0011223344",
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vatNumber: "VAT-556677",
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fanNumber: "FAN-889900",
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businessLicense: "BL/AA/12/345678",
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},
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provider: {
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name: "Ethio-Djibouti Standard Gauge Railway Share Company",
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address: "Nifas Silk Lafto Sub City, Addis Ababa, Ethiopia",
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phone: "+251 11 872 0000",
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email: "info@edr.gov.et",
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tinNumber: "—",
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},
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schedule: {
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originLabel: isBulk ? "Nagad Railway Station" : "SGTD Freight Station",
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destinationLabel: "Galaan Multipurpose Port (GMP)",
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tradeDirection: code.startsWith("IMPORT")
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? "IMPORT"
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: code.startsWith("EXPORT")
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? "EXPORT"
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: "DOMESTIC",
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freightType: isBulk ? "BULK" : "CONTAINER",
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serviceType: "Rail transport and customs clearance",
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scheduledDate: "—",
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contractType: "GENERAL",
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cargoDescription: isBulk ? "Steel billets — 2,800 MT" : "40ft containers — FMCG cargo",
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totalWeightVgm: "—",
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equipmentReturn: isBulk ? "—" : "With empty return",
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hazardousLabel: "No",
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firstMilePickupAddress: "—",
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lastMileDeliveryAddress: "—",
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},
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pricing: {
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displayMode: "UNIT_RATES",
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unitRates,
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currency: "USD",
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equipmentReturn: isBulk ? "—" : "With empty return",
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originLabel: isBulk ? "Nagad Railway Station" : "SGTD Freight Station",
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destinationLabel: "Galaan Multipurpose Port (GMP)",
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} as unknown as ContractViewModel["pricing"],
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signatures: [],
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canSignCustomer: false,
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canSignStaff: false,
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hasContractDocument: false,
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hasCustomerSignature: false,
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hasStaffSignature: false,
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dynamicTemplate,
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};
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}
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private assertCode(code: string): ContractTemplateCode {
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const upper = code?.toUpperCase() as ContractTemplateCode;
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if (!CONTRACT_TEMPLATE_CODES.includes(upper)) {
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throw new BadRequestException(
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`Unknown contract template code "${code}". Valid codes: ${CONTRACT_TEMPLATE_CODES.join(", ")}`,
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);
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}
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return upper;
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}
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private sorted(articles: ContractTemplateArticle[]): ContractTemplateArticle[] {
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return [...(articles ?? [])].sort((a, b) => (a.order ?? 0) - (b.order ?? 0));
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}
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private renumber(articles: ContractTemplateArticle[]): ContractTemplateArticle[] {
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return articles.map((article, index) => ({ ...article, order: index + 1 }));
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}
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}
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