From abcfddfab844f338d71825cf0fbeaa31312d774b Mon Sep 17 00:00:00 2001
From: Pacharapol Withayasakpunt <patarapolw@gmail.com>
Date: Thu, 27 Feb 2020 16:55:49 +0700
Subject: [PATCH] add backend data-query

---
 web/backend/src/api/data.ts  | 40 ++++++++++++++++++++++++++++++++++++
 web/backend/src/api/index.ts |  3 +++
 web/backend/src/global.ts    |  3 +++
 3 files changed, 46 insertions(+)
 create mode 100644 web/backend/src/global.ts

diff --git a/web/backend/src/api/data.ts b/web/backend/src/api/data.ts
index 9d4dc79..8045499 100644
--- a/web/backend/src/api/data.ts
+++ b/web/backend/src/api/data.ts
@@ -2,9 +2,14 @@ import fs from 'fs'
 import path from 'path'
 
 import { Router } from 'express'
+import bodyParser from 'body-parser'
+import QSearch from '@patarapolw/qsearch'
+
 import MakeHtml from '../utils/make-html'
+import { db } from '../global'
 
 const dataRouter = Router()
+dataRouter.use(bodyParser.json())
 
 dataRouter.get('/*', (req, res) => {
   const p = path.join('../../data', `${req.params[0]}.md`)
@@ -19,4 +24,39 @@ dataRouter.get('/*', (req, res) => {
   }
 })
 
+dataRouter.post('/', async (req, res, next) => {
+  try {
+    const { q, project, offset, limit } = req.body
+    let cond = q
+    if (typeof q === 'string') {
+      const parser = new QSearch({
+        dialect: 'nedb',
+        schema: {
+          filename: {},
+          excerpt: {},
+          date: { type: 'date' }
+        }
+      })
+      cond = parser.parse(q)
+    }
+
+    const count = await db.count(cond)
+
+    let c = db.find(cond).skip(offset || 0)
+    if (project) {
+      c = c.projection(project)
+    }
+    if (limit !== null) {
+      c = c.limit(limit || 5)
+    }
+
+    res.json({
+      data: await c,
+      count
+    })
+  } catch (e) {
+    next(e)
+  }
+})
+
 export default dataRouter
diff --git a/web/backend/src/api/index.ts b/web/backend/src/api/index.ts
index e067cc2..eebd8af 100644
--- a/web/backend/src/api/index.ts
+++ b/web/backend/src/api/index.ts
@@ -6,6 +6,9 @@ const apiRouter = Router()
 apiRouter.use(cors())
 
 apiRouter.get('/', (req, res) => res.sendStatus(200))
+apiRouter.get('/api/favicon.ico', (req, res) => {
+  res.sendFile('../../data/favicon.ico')
+})
 
 apiRouter.use('/data', dataRouter)
 
diff --git a/web/backend/src/global.ts b/web/backend/src/global.ts
new file mode 100644
index 0000000..8fc3702
--- /dev/null
+++ b/web/backend/src/global.ts
@@ -0,0 +1,3 @@
+import DataStore from 'nedb-promises'
+
+export const db = new DataStore('assets/data.nedb')