Init

src/luxtools.nim

@@ -0,0 +1,119 @@
+import std/[asynchttpserver, asyncdispatch, os, strformat, strutils, times]
+
+const
+  indexPage = staticRead("../templates/index.html")
+
+var clickCount = 0
+
+proc htmlHeaders(): HttpHeaders =
+  result = newHttpHeaders()
+  result.add("Content-Type", "text/html; charset=utf-8")
+
+proc assetHeaders(contentType: string): HttpHeaders =
+  result = newHttpHeaders()
+  result.add("Content-Type", contentType)
+
+proc renderCounter*(count: int): string =
+  &"""
+  <div id="counter" class="tui-panel tui-panel-inline">
+    <p><strong>Clicks:</strong> {count}</p>
+    <button class="tui-button" hx-post="/counter" hx-target="#counter" hx-swap="outerHTML">
+      Increment
+    </button>
+  </div>
+  """
+
+proc renderTime(): string =
+  let now = now().format("yyyy-MM-dd HH:mm:ss")
+  &"""
+  <div id="server-time" class="tui-panel tui-panel-inline">
+    <p><strong>Server time:</strong> {now}</p>
+  </div>
+  """
+
+proc sendHtml(req: Request, body: string) {.async, gcsafe.} =
+  await req.respond(Http200, body, htmlHeaders())
+
+proc sendHtml(req: Request, code: HttpCode, body: string) {.async, gcsafe.} =
+  await req.respond(code, body, htmlHeaders())
+
+proc sendAsset(req: Request, body: string, contentType: string) {.async, gcsafe.} =
+  await req.respond(Http200, body, assetHeaders(contentType))
+
+proc guessContentType(path: string): string =
+  let ext = splitFile(path).ext.toLowerAscii()
+  case ext
+  of ".js":
+    result = "application/javascript"
+  of ".css":
+    result = "text/css"
+  of ".html":
+    result = "text/html; charset=utf-8"
+  of ".json":
+    result = "application/json"
+  of ".png":
+    result = "image/png"
+  of ".jpg", ".jpeg":
+    result = "image/jpeg"
+  of ".svg":
+    result = "image/svg+xml"
+  of ".gif":
+    result = "image/gif"
+  of ".ico":
+    result = "image/x-icon"
+  else:
+    result = "application/octet-stream"
+
+proc trySendAsset(req: Request): Future[bool] {.async, gcsafe.} =
+  if req.reqMethod notin {HttpGet, HttpHead}:
+    return false
+
+  let path = req.url.path
+  if path.len <= 1 or path[0] != '/':
+    return false
+
+  let relative = path[1..^1]
+  if relative.len == 0 or relative.contains("..") or relative.contains('\\'):
+    return false
+
+  let assetPath = joinPath(absolutePath(joinPath(getAppDir(), "..", "assets")), relative)
+  if not fileExists(assetPath):
+    return false
+    
+  let contentType = guessContentType(assetPath)
+  if req.reqMethod == HttpHead:
+    await req.respond(Http200, "", assetHeaders(contentType))
+  else:
+    await sendAsset(req, readFile(assetPath), contentType)
+  return true
+
+proc handleRequest(req: Request) {.async, gcsafe.} =
+  case req.url.path
+  of "/":
+    await sendHtml(req, indexPage)
+  of "/counter":
+    if req.reqMethod in {HttpPost, HttpPut}:
+      inc clickCount
+    await sendHtml(req, renderCounter(clickCount))
+  of "/time":
+    await sendHtml(req, renderTime())
+  else:
+    if await trySendAsset(req):
+      return
+    await sendHtml(req, Http404, """
+    <div class="tui-window">
+      <fieldset class="tui-fieldset">
+        <legend>Error</legend>
+        <p>Route """ & req.url.path & """ not found.</p>
+      </fieldset>
+    </div>
+    """)
+
+proc runServer() {.async.} =
+  let server = newAsyncHttpServer()
+  let port = Port(5000)
+  echo &"Luxtools web server running on http://127.0.0.1:{port.int}"
+  await server.serve(port, handleRequest)
+
+when isMainModule:
+  waitFor runServer()