1 files changed, 103 insertions, 0 deletions
diff --git a/example/main.lua b/example/main.lua
new file mode 100644
index 0000000..98e3ea8
--- /dev/null
+++ b/example/main.lua
@@ -0,0 +1,103 @@
+-- a helper for handling API results: throws an error if the call
+-- was unsuccessful, otherwise returns the result
+function must(...)
+  local ok, result = ...
+  if not ok then
+    error(result)
+  end
+  return result
+end
+
+-- open a database connection
+local db = must(luna.db.open("file:db.sqlite?_journal=WAL&_sync=NORMAL"))
+must(luna.db.exec(db, [[
+  CREATE TABLE IF NOT EXISTS hits(creation_time DATETIME NOT NULL);
+]], {}))
+
+-- register a GET / route that displays a home page for the example site
+luna.router.route("GET /", function (request)
+  local response = "{\"method\": \"" .. request.method .. "\""
+  response = response .. ", \"path\": \"" .. request.path .. "\"}"
+
+  return 200, {["Content-Type"] = "text/html"}, [[
+  <!DOCTYPE html>
+  <html>
+    <head>
+      <title>A simple example of website made for luna</title>
+      <link rel="stylesheet" href="/static/style.css">
+    </head>
+    <body>
+      <main class="container">
+        <h1>Wow! A simple website made for luna?</h1>
+        <nav>
+          <div class="menu-link">
+            <a href="/json">JSON example</a> &mdash; print basic request data
+            in JSON format
+          </div>
+          <div class="menu-link">
+            <a href="/db">DB example</a> &mdash; write a hit into the database
+            and return overall number of hits
+          </div>
+          <div class="menu-link">
+            <a href="/request">HTTP request</a> &mdash; send an HTTP-request
+            to ifconfig.me and return the result
+          </div>
+        </nav>
+      </main>
+    </body>
+  </html>]]
+end)
+
+-- register a GET /json route and return some request data in response
+luna.router.route("GET /json", function (request)
+  local response = "{\"method\": \"" .. request.method .. "\""
+  response = response .. ", \"path\": \"" .. request.path .. "\"}"
+
+  return 200, {["Content-Type"] = "application/json"}, response
+end)
+
+-- register a GET /db route. visiting it writes a hit to the database and
+-- displays visits count
+luna.router.route("GET /db", function (request)
+  local ok, err = luna.db.exec(
+    db,
+    "INSERT INTO hits VALUES (?)",
+    {os.date("%Y-%m-%d %H:%M:%S")}
+  )
+  if not ok then
+    return 500,
+           {["Content-Type"] = "application/json"},
+           "error while saving to db: " .. err
+  end
+  local ok, res = luna.db.query(db, "SELECT COUNT(*) FROM hits", {})
+  if not ok then
+    return 500,
+           {["Content-Type"] = "application/json"},
+           "error while querying db: " .. res
+  end
+  return 200, {["Content-Type"] = "text/html"}, "Hits: " .. tostring(res[1][1])
+end)
+
+-- register a GET /request route. when visited makes an HTTP-request to
+-- https://ifconfig.me service and displays the result
+luna.router.route("GET /request", function ()
+  local ok, response = luna.http.request("GET", "https://ifconfig.me", {}, "")
+  if not ok then
+    return 500,
+           {["Content-Type"] = "application/json"},
+           "error while fetching data from ifconfig.me: " .. response
+  end
+  return 200, {}, "Your IP is: " .. response.body
+end)
+
+-- serve static files from static/ directory
+luna.router.static("GET /static/", "static/")
+
+-- register a custom eval handler that will evaluate whatever is passed into
+-- luna stdio when it's run with -D flag. in this case we print the result of
+-- evaluation. eval handler is evaluated once for each worker so the result
+-- may be printed more than once
+luna.evalfn(function (text)
+  local res = loadstring(text)
+  print(res)
+end)