Simplify and generalize template processing

"For the unit tests. For the unit tests!"

1 files changed, 21 insertions, 25 deletions

diff --git a/src/templates.ts b/src/templates.ts
index 2ffd0dd..5458a36 100644
--- a/src/templates.ts
+++ b/src/templates.ts
@@ -1,30 +1,26 @@
-import winston from "winston";
 import handlebars from "handlebars";
-import path from "path";
 import fs from "fs";
 
-import loggerConfig from "./util/logger";
-import { configOrError } from "./util/config";
+export interface Template {
+  inputFile: string;
+  outputFile: string;
+  context: object;
+  data: string | undefined;
+}
 
-const logger = winston.createLogger(loggerConfig("TEMPLATE"));
+export default (_template: Template): Promise<Template> =>
+  fs.promises
+    .readFile(_template.inputFile, "utf-8")
+    .then(buffer => {
+      const translate = handlebars.compile(buffer);
 
-const HOST_DIR = configOrError("HOST_DIR");
-const TARGET_URL = process.env.TARGET_URL || "http://localhost:3000";
-
-fs.promises
-  .readFile(path.join(__dirname, "..", "public", "bash.template"), "utf-8")
-  .then(buffer => {
-    const translate = handlebars.compile(buffer);
-
-    return {
-      name: "bash",
-      data: translate({ TARGET_URL })
-    };
-  })
-  .then(file =>
-    fs.promises
-      .writeFile(path.join(HOST_DIR, file.name), file.data)
-      .then(() => file)
-  )
-  .then(file => logger.debug("Generated '%s' from template file", file.name))
-  .catch(err => logger.error("Error while generating template file: %s", err));
+      return {
+        ..._template,
+        data: translate(_template.context)
+      };
+    })
+    .then(template =>
+      fs.promises
+        .writeFile(template.outputFile, template.data)
+        .then(() => template)
+    );