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urlshort.nim
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# nimshorturl | |
# Copyright xmonader | |
# nim url shortening service | |
import jester, asyncdispatch, htmlgen, json, os, strutils, strformat, db_sqlite | |
# hostname can be something configurable "http://ni.m:5000" | |
let hostname = "localhost:5000" | |
var theDb : DbConn | |
if not fileExists("/tmp/mytest.db"): | |
theDb = open("/tmp/mytest.db", "", "", "") | |
theDb.exec(sql("""create table urls ( | |
id INTEGER PRIMARY KEY, | |
url VARCHAR(255) NOT NULL | |
)""" | |
)) | |
else: | |
theDb = open("/tmp/mytest.db", "", "", "") | |
routes: | |
get "/home": | |
var htmlout = """ | |
<html> | |
<title>NIM SHORT</title> | |
<head> | |
<script | |
src="https://code.jquery.com/jquery-3.3.1.min.js" | |
integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" | |
crossorigin="anonymous"></script> | |
<script> | |
function postData(url, data) { | |
// Default options are marked with * | |
return fetch(url, { | |
body: JSON.stringify(data), // must match 'Content-Type' header | |
cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached | |
credentials: 'same-origin', // include, same-origin, *omit | |
headers: { | |
'user-agent': 'Mozilla/4.0 MDN Example', | |
'content-type': 'application/json' | |
}, | |
method: 'POST', // *GET, POST, PUT, DELETE, etc. | |
mode: 'cors', // no-cors, cors, *same-origin | |
redirect: 'follow', // manual, *follow, error | |
referrer: 'no-referrer', // *client, no-referrer | |
}) | |
.then(resp => resp.json()) | |
} | |
$(document).ready(function() { | |
$('#btnsubmit').on('click', function(e){ | |
e.preventDefault(); | |
postData('/shorten', {url: $("#url").val()}) | |
.then( data => { | |
let id = data["id"] | |
$("#output").html(`<a href="%%hostname/${id}">Shortlink: ${id}</a>`); | |
}); | |
}); | |
}); | |
</script> | |
</head> | |
<body> | |
<div> | |
<form> | |
<label>URL</label> | |
<input type="url" name="url" id="url" /> | |
<button id="btnsubmit" type="button">SHORT!</button | |
</form> | |
</div> | |
<div id="output"> | |
</div> | |
</body> | |
</html> | |
""" | |
htmlout = htmlout.replace("%%hostname", hostname) | |
resp htmlout | |
post "/shorten": | |
let url = parseJson(request.body).getOrDefault("url").getStr() | |
if not url.isNilOrEmpty(): | |
var id = theDb.getValue(sql"SELECT id FROM urls WHERE url=?", url) | |
echo "ID: " & $id | |
if id.isNilOrEmpty(): | |
id = $theDb.tryInsertId(sql"INSERT INTO urls (url) VALUES (?)", url) | |
var jsonResp = $(%*{"id": id}) | |
echo "RESP JSON: ", jsonResp | |
resp Http200, jsonResp | |
else: | |
resp Http400, "please specify url in the posted data." | |
get "/@Id": | |
let url = theDb.getValue(sql"SELECT url FROM urls WHERE id=?", @"Id") | |
if url.isNilOrEmpty(): | |
resp Http404, "Don't know that url" | |
else: | |
redirect url | |
runForever() | |
theDb.close() | |
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I got farther, but now I get: (if this is annoying just tel me and I'll stop)
Users/tmunn/src/nim/shorturl/test.nim(9, 15) Error: type mismatch: got <string, typeof(nil), typeof(nil), typeof(nil)>
but expected one of:
proc open(filename: string; mode: FileMode = fmRead; bufSize: int = -1): File
first type mismatch at position: 2
required type for mode: FileMode
but expression 'nil' is of type: typeof(nil)
proc open(connection, user, password, database: string): DbConn
first type mismatch at position: 2
required type for user: string
but expression 'nil' is of type: typeof(nil)
4 other mismatching symbols have been suppressed; compile with --showAllMismatches:on to see them
expression: open("/Users/tmunn/mytest.db", nil, nil, nil)