Merge pull request #173 from sejori/routesFromDir

feat: routeGen fcn in routesFromDir

lib/utils/helpers.ts

@@ -1,5 +1,4 @@
-import { Middleware, Route } from "../types.ts"
-import { Handler } from "../types.ts"
+import { Route } from "../types.ts"
 
 /**
  * Merge source headers into base headers and return base
@@ -19,31 +18,26 @@ export const mergeHeaders = (base: Headers, source: Headers) => {
  * Recursively create an array of routes with the static handler 
  * for all files/sub-directories in the provided directory.
  * @param dirUrl: URL
- * @param middleware: Middleware for each route added
- * @param routes: init Route array
+ * @param routeGen: (path: string, url: URL) => Route
  * @param _depth: used internally to correct paths, don't set
  * @returns routes: Route[]
  */
-export const routesFromDir = async (dirUrl: URL, handlerGen: (url: URL) => Handler, middleware?: Middleware | Middleware[], _depth = 1): Promise<Route[]> => {
+export const routesFromDir = async (dirUrl: URL, routeGen: (path: `/${string}`, url: URL) => Route, _depth = 1): Promise<Route[]> => {
   if (!(await Deno.stat(dirUrl)).isDirectory) throw new Error("URL does not point to directory.")
   const routes: Route[] = []
 
   for await (const file of Deno.readDir(dirUrl)) {
     const fileUrl = new URL(`file://${dirUrl.pathname}/${file.name}`)
     if (file.isDirectory) {
-      const subDirRoutes = await routesFromDir(fileUrl, handlerGen, middleware, _depth+1)
+      const subDirRoutes = await routesFromDir(fileUrl, routeGen, _depth+1)
       routes.splice(0, 0, ...subDirRoutes)
     } else {
-      const pieces = dirUrl.pathname.split("/")
-      let dirPath = ''
-      for (let i=1; i<_depth; i++) dirPath = `${pieces[pieces.length-i]}/${dirPath}`
+      const pieces = dirUrl.pathname.split("/").filter(Boolean)
+      let dirPath: `/${string}` = '/'
+      for (let i=1; i<=_depth; i++) dirPath = `/${pieces[pieces.length-i]}${dirPath}`
 
-      const filePath = `${dirPath}${file.name}`
-      routes.push({
-        path: `/${filePath}`,
-        middleware,
-        handler: handlerGen(fileUrl)
-      })
+      const filePath: `/${string}` = `${dirPath}${file.name}`
+      routes.push(routeGen(filePath, fileUrl))
     }
   }
 

tests/utils/helpers_test.ts

@@ -20,10 +20,17 @@ Deno.test("UTIL: helpers", async (t) => {
 
   await t.step("routesFromDir returns all file routes with supplied middleware and handler", async () => {
     const server = new Server()
-    const request = new Request('https://localhost:7777/utils/helpers_test.ts')
+    const request = new Request('https://localhost:7777/tests/utils/helpers_test.ts')
 
     let text = ''
-    const routes = await routesFromDir(new URL("../", import.meta.url), (url: URL) => staticHandler(url), () => { text = "I was set" })
+    const routes = await routesFromDir(
+      new URL("../", import.meta.url), 
+      (path, url) => ({
+        path: path,
+        middleware: () => { text = "I was set" },
+        handler: staticHandler(url)
+      })
+    )
 
     assert(routes.find(route => route.path.includes("handlers")))
     assert(routes.find(route => route.path.includes("middleware")))