From 1318328fe76524a8d728e14832df17e7fcf47a7e Mon Sep 17 00:00:00 2001
From: Roman Timashev <roman@tmshv.ru>
Date: Tue, 3 Mar 2020 07:43:30 +0300
Subject: [PATCH] api page coverSrc support; filter tags response by field

---
 modules/hudozka-api/src/controllers/page.ts | 10 +++++++--
 modules/hudozka-api/src/core/Image.ts       | 23 ++++++++++++++-------
 modules/hudozka-api/src/factory/page.ts     |  4 ++++
 modules/hudozka-api/src/lib/array.ts        | 15 +++++++++++++-
 4 files changed, 42 insertions(+), 10 deletions(-)

diff --git a/modules/hudozka-api/src/controllers/page.ts b/modules/hudozka-api/src/controllers/page.ts
index 7f3296eb..2ad77df4 100644
--- a/modules/hudozka-api/src/controllers/page.ts
+++ b/modules/hudozka-api/src/controllers/page.ts
@@ -1,8 +1,10 @@
+import { pick } from 'lodash'
 import { Request, Response } from 'express'
 import Page from '../core/Page'
-import { dropTrailingSlash, getPathWaterfall, readQueryArray, readQueryInt, readQueryString } from '../lib/url'
+import { dropTrailingSlash, readQueryArray, readQueryInt, readQueryString } from '../lib/url'
 import { encodePage } from '../factory/page'
 import * as breadcrumb from './breadcrumb'
+import { isArrayOk } from '../lib/array'
 
 function getSort(sortBy: string) {
     if (!sortBy) {
@@ -64,6 +66,7 @@ export async function getByTags(req: Request, res: Response) {
     const limit = readQueryInt(req, 'limit')
     const sortBy = readQueryString(req, 'sortBy')
     const sort = getSort(sortBy)
+    const fields = readQueryArray(req, 'field')
 
     const tags = readQueryArray(req, 'tag')
     if (tags.length === 0) {
@@ -80,7 +83,10 @@ export async function getByTags(req: Request, res: Response) {
 
     if (models) {
         const pages = await Promise.all(models.map(resolveItem))
-        const items = pages.map(encodePage)
+        const encodedItems = pages.map(encodePage)
+        const items = isArrayOk(fields)
+            ? encodedItems.map(x => pick(x, fields))
+            : encodedItems
 
         res.json({
             items,
diff --git a/modules/hudozka-api/src/core/Image.ts b/modules/hudozka-api/src/core/Image.ts
index 568d7edc..49ee7ef1 100644
--- a/modules/hudozka-api/src/core/Image.ts
+++ b/modules/hudozka-api/src/core/Image.ts
@@ -36,9 +36,9 @@ export default class Image {
         const artifacts = data.data
         return new Image({ ...data, artifacts })
     }
-    public hash: any
-    public file: any
-    public artifacts: any
+    public hash: string
+    public file: string
+    public artifacts: Map<string, ImageArtifact>
 
     constructor({ hash, file, artifacts }) {
         this.hash = hash
@@ -79,13 +79,22 @@ export default class Image {
             set: srcset,
         }
     }
+
+    getSrc(): string | null {
+        const a = this.getArtifact(ImageArtifactType.ORIGINAL)
+        if (!a) {
+            return null
+        }
+
+        return a.url
+    }
 }
 
 class ImageArtifact {
-    public url: any
-    public size: any
-    public width: any
-    public height: any
+    public url: string
+    public size: string
+    public width: number
+    public height: number
 
     constructor({ url, size, width, height }) {
         this.url = url
diff --git a/modules/hudozka-api/src/factory/page.ts b/modules/hudozka-api/src/factory/page.ts
index 231b5916..bc2cad20 100644
--- a/modules/hudozka-api/src/factory/page.ts
+++ b/modules/hudozka-api/src/factory/page.ts
@@ -20,6 +20,7 @@ type PageDto = {
     tags: Tag[]
     featured: boolean
     breadcrumb: Breadcrumb
+    coverSrc?: string
 }
 
 export function encodePage(page: Page): PageDto {
@@ -27,6 +28,8 @@ export function encodePage(page: Page): PageDto {
     const date = page.date ? page.date.toString() : null
     const breadcrumb = page.getBreadcrumb()
 
+    const coverSrc = page.preview ? page.preview.getSrc() : null
+
     return {
         id: page.id,
         title: page.title,
@@ -39,5 +42,6 @@ export function encodePage(page: Page): PageDto {
         preview,
         date,
         breadcrumb,
+        coverSrc,
     }
 }
diff --git a/modules/hudozka-api/src/lib/array.ts b/modules/hudozka-api/src/lib/array.ts
index 294db4eb..cacae12b 100644
--- a/modules/hudozka-api/src/lib/array.ts
+++ b/modules/hudozka-api/src/lib/array.ts
@@ -1,4 +1,4 @@
-export function unique<T>(items: T[], key: (item: T) => string): T[]{
+export function unique<T>(items: T[], key: (item: T) => string): T[] {
     const map = new Map(items.map(x => [key(x), x]))
 
     return [...map.values()]
@@ -16,3 +16,16 @@ export function ensureArray<T>(value: T | T[]): T[] {
     return [value]
 }
 
+/**
+ * 
+ * Check if array has one item at least
+ * 
+ * @param items 
+ */
+export function isArrayOk<T>(items: T[]): boolean {
+    if (!Array.isArray(items)) {
+        return false
+    }
+
+    return items.length > 0
+}