-
Notifications
You must be signed in to change notification settings - Fork 0
/
app.js
295 lines (229 loc) · 9.55 KB
/
app.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
require('dotenv').config()
const dbuser = process.env.DBUSER
const dbpass= process.env.DBPASS
const express = require('express')
const bodyParser = require('body-parser')
const fileUploader = require('express-fileupload')
const nano = require('nano')(`http://${dbuser}:${dbpass}@couchdb:5984`) // To run the app in the locally cahnge the `cocuhdb` to `localhost`
const app = express()
const db = nano.use('resapi')
app.use(express.static('upload'))
app.use(fileUploader())
app.use(bodyParser.json())
// EndPoint To Create Docs
app.post("/api/create/", async(req,res)=>{
var result = {
status:false,
info:"",
live_url:"",
}
// Server Side Input validation
if(req.body.id === undefined || !req.files
|| req.body.name === undefined || req.body.description === undefined){
result.info = "Invalid Submissions"
res.setHeader('Content-Type', 'application/json')
res.send(result)
} else {
let id = req.body.id; // Id For Counch DB Unique Id
let file = req.files.image // extracting the tih the use "express-fileupload"
await db.multipart.insert({name:req.body.name,description:req.body.description,image_url:`http://127.0.0.1:5000/api/media/view/${id}`},
[{name:file.name,data:file.data,content_type:file.mimetype}],
id,(err)=>{
if(err){
// If Any Error From DB Side
result.info = "Failed To Save Data"
res.setHeader('Content-Type', 'application/json')
res.send(result)
console.log(err)
}
else{
result.status = true
result.info = "Successfully Uploaded"
result.live_url = `http://127.0.0.1:5000/api/doc/single/${id}`
res.setHeader('Content-Type', 'application/json')
res.send(result)
}
});
}
})
// Get Doc Info By The Doc Id
app.get('/api/doc/single/:id',async(req,res)=>{
await db.get(req.params.id,(err,data)=>{
if(err){
res.setHeader('Content-Type','application/json')
res.send({status:"failed",info:"Invalid Id"})
}
else{
res.setHeader('Content-Type','application/json')
res.send(data)
}
})
})
// get image from the db using piping
app.get('/api/media/view/:id',async(req,res)=>{
await db.get(req.params.id,(err,data)=>{
if(err){
res.setHeader('Content-Type','application/json')
res.send({status:"failed",info:"Invalid Id"})
}else{
// Data is Is The Whole Doc
// attachments is the array of files objects the f
let attachmentName = Object.keys(data._attachments)[0] // dethc firts filrs file object name
let attachmentObject = data._attachments[attachmentName] // get the file object to get the fill type info
res.setHeader('Content-Type',attachmentObject.content_type) // set the header as per the file type
db.attachment.getAsStream(req.params.id,attachmentName).pipe(res) // stream line the file to the user
}
})
})
// Api Update Docs
app.put('/api/doc/single/update/:id', async(req,res)=>{
await db.get(req.params.id,async (err, data)=>{
if(err){
res.setHeader('Content-Type','application/json')
res.send({data: "DB Error",status:"Invalid Id"})
return;
}
else{
// Note: We Need Pass Alll Associated Filed With The Doc Other Wise It Will
// It Will Only Kep The Given Filed And Deletes The All The Fields
if(!req.body.name || !req.body.description) {
res.setHeader('Content-Type','application/json')
res.send({data: "Submiison Error ",status:"Invalid Submission"})
} else {
await db.insert({
_id:req.params.id,
_rev:data._rev,
name: req.body.name,
description:req.body.description,
image_url:data.image_url,
_attachments:data._attachments},(err)=>{
if(err){
res.setHeader('Content-Type','application/json')
res.send({data: "DB Error",status:"Failed To Update"})
}
else{
res.setHeader('Content-Type','application/json')
res.send({data: "Updated",status:"Okay",live_url: `http://127.0.0.1:5000/api/doc/single/${req.params.id}`})
}
});
}
}
})
})
// Add Attachment To Existing Doc
app.put('/api/media/update/existing/attachment/:id', async (req, res) => {
if (!req.files || Object.keys(req.files).length === 0) {
res.setHeader('Content-Type', 'application/json');
res.send({ data: "Error", status: "Invalid Submission" });
return;
}
try {
const check = await db.get(req.params.id);
// Get The First Attachment
const attachmentName = Object.keys(check._attachments)[0];
if (!attachmentName) {
res.setHeader('Content-Type', 'application/json');
res.send({ data: "DB Error", status: "Doc Does Not Have Any Attachments" });
return;
}
// Delete The Existing Attachment
await db.attachment.destroy(check._id, attachmentName, { rev: check._rev });
// Get The Image From The Client - Assuming it's in req.files
const image = req.files.image;
const updatedDoc = await db.get(req.params.id)
// Add The New Attachment To The Doc
await db.attachment.insert(check._id, image.name, image.data, image.mimetype, { rev: updatedDoc._rev });
// Create Media Url For The New Image
res.setHeader('Content-Type', 'application/json');
res.send({ data: "Done", status: "Successfully Updated The Attachment" });
} catch (err) {
console.error(err);
res.setHeader('Content-Type', 'application/json');
res.send({ data: "DB Error", status: "Failed To Update The Attachment" });
}
});
// Add Attachments To The Exiting Doc
app.put('/api/media/add/attachmnets/:id', async(req,res)=>{
if(!req.files){
res.setHeader('Content-Type', 'application/json');
res.send({ data: "Error", status: "Invalid Submission" });
return;
}
try {
const doc = await db.get(req.params.id);
const image = req.files.image;
await db.attachment.insert(doc._id, image.name, image.data, image.mimetype, {rev:doc._rev})
res.setHeader('Content-Type', 'application/json')
res.send({data:"done", status:"succesFully Added the Doc"})
return;
} catch(err) {
res.setHeader('Content-Type', 'application/json')
res.send({data:"Db Eroor", status:"Failed To Updated"})
return;
}
})
app.get('/api/doc/list',async(req,res)=>{
//{include_docs: true} to return the the docs otherwise
// only id,key, and _rev will be returned
await db.list({include_docs: true}).then((body)=>{
res.setHeader('Content-Type','application/json')
// body returns the Whole db body
// rows contains all the docs
res.send({data: body.rows, status:"okay"}) //
}).catch((err)=>{
res.setHeader('Content-Type','application/json')
res.send({data: "DB Error",status:"failed"})
})
})
app.delete('/api/doc/remove/:id', async(req,res)=>{
try {
const doc = await db.get(req.params.id)
await db.destroy(doc._id,doc._rev)
res.setHeader('Content-Type','application/json')
res.send({data: "Done",status:"Success Fully Deleted"})
} catch (error) {
console.log(error)
res.setHeader('Content-Type','application/json')
res.send({data: "DB Error",status:"failed"})
}
})
// Get All The Attchments Url Of An Doc
app.get('/api/media/all/:id',async(req,res)=>{
try {
const doc = await db.get(req.params.id)
if(doc._attachments === undefined){
res.setHeader('Content-Type','application/json')
res.send({data: "DB Error",status:"Does Not Contain Any Documnetations"})
return;
}else {
const attchtments = Object.keys(doc._attachments)
let urlList = []
attchtments.map((el,index)=>{
let url = `http://127.0.0.1:5000/api/media/view/${doc._id}/${index}`
urlList.push(url)
});
res.setHeader('Content-Type','application/json')
res.send({data: urlList,status:"All The Attachmnet Url Is Sent"})
}
} catch (error) {
res.setHeader('Content-Type','application/json')
res.send({data: 'Db Error', status:"Invalid ID"})
}
});
// display invividual Attachemnts From Along With Attachment Names
app.get('/api/media/view/:id/:attachment', async(req,res)=>{
try {
const doc = await db.get(req.params.id)
const attachmentName = Object.keys(doc._attachments)[req.params.attachment]
const attachmentObject = doc._attachments[attachmentName]
res.setHeader('Content-Type', attachmentObject.content_type)
db.attachment.getAsStream(req.params.id,attachmentName).pipe(res)
} catch (error) {
console.log(error);
res.setHeader('Content-Type','application/json')
res.send({data:'Db Erro', status:"Failed Display"})
}
})
app.listen(5000, ()=>{
console.log("Server Started")
})