From bfeafab6244e82add2799595dfb45178628ce1e8 Mon Sep 17 00:00:00 2001
From: Ardis Lu <ardisglu@gmail.com>
Date: Sat, 20 Apr 2024 21:51:45 -0700
Subject: [PATCH 1/1] Initial commit

---
 .gitignore   |   1 +
 README.md    |  45 ++++++++++++++++++++++++++++++++++++++
 bun.lockb    | Bin 0 -> 7024 bytes
 index.ts     |  60 +++++++++++++++++++++++++++++++++++++++++++++++++++
 package.json |  13 +++++++++++
 5 files changed, 119 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 bun.lockb
 create mode 100644 index.ts
 create mode 100644 package.json

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3c3629e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..30a919b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,45 @@
+# Transcriber
+
+Transcriber is a [Bun](https://bun.sh/) CLI for executing combinations of shell
+commands.
+
+## Example
+
+Given the following `input.json`:
+
+```json
+{
+  "command": "echo $arg1 $arg2 $arg3",
+  "args": {
+    "arg1": ["value1", "value2"],
+    "arg2": ["value3", "value4"],
+    "arg3": ["value5", "value6"]
+  }
+}
+```
+
+Do:
+
+```plaintext
+bun run index.ts -- --input input.json   
+$ echo value1 value3 value5
+value1 value3 value5
+$ echo value1 value3 value6
+value1 value3 value6
+$ echo value1 value4 value5
+value1 value4 value5
+$ echo value1 value4 value6
+value1 value4 value6
+$ echo value2 value3 value5
+value2 value3 value5
+$ echo value2 value3 value6
+value2 value3 value6
+$ echo value2 value4 value5
+value2 value4 value5
+$ echo value2 value4 value6
+value2 value4 value6
+```
+
+The commands are run using [Bun Shell](https://bun.sh/docs/runtime/shell), which
+implements its own set of
+[built-in commands](https://bun.sh/docs/runtime/shell#builtin-commands).
diff --git a/bun.lockb b/bun.lockb
new file mode 100644
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diff --git a/index.ts b/index.ts
new file mode 100644
index 0000000..d61c8cf
--- /dev/null
+++ b/index.ts
@@ -0,0 +1,60 @@
+import { $ } from "bun";
+import { Command } from "@commander-js/extra-typings";
+
+const program = new Command()
+  .name("transcriber")
+  .description("CLI for executing combinations of shell commands.")
+  .version("0.1.0")
+  .requiredOption(
+    "-i, --input <string>",
+    "JSON file with command and arguments to execute",
+  );
+program.parse();
+const options = program.opts();
+
+const file = Bun.file(options.input);
+const json = await file.json();
+const { command, args } = json;
+
+// Based on: https://stackoverflow.com/a/32839413/21084807
+function getCombinations(
+  args,
+  index = 0,
+  results: Array<Record<string, string>> = [],
+  current = {},
+): Array<Record<string, string>> {
+  const allKeys = Object.keys(args);
+  const key = allKeys[index];
+  const values = args[key];
+
+  for (let i = 0; i < values.length; i++) {
+    current[key] = values[i];
+
+    if (index + 1 < allKeys.length) {
+      getCombinations(args, index + 1, results, current);
+    } else {
+      results.push(structuredClone(current));
+    }
+  }
+
+  return results;
+}
+
+const c = Object.defineProperty([command], "raw", {
+  value: [command],
+}) as unknown as TemplateStringsArray;
+
+if (args === undefined) {
+  console.log(`$ ${command}`);
+  await $(c);
+} else {
+  const runs = getCombinations(args);
+  for (const options of runs) {
+    let input = command;
+    for (const [key, value] of Object.entries(options)) {
+      input = input.replaceAll(`$${key}`, value);
+    }
+    console.log(`$ ${input}`);
+    await $(c).env(options);
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..3d6c71a
--- /dev/null
+++ b/package.json
@@ -0,0 +1,13 @@
+{
+  "name": "transcriber",
+  "type": "module",
+  "module": "index.ts",
+  "dependencies": {
+    "@commander-js/extra-typings": "^12.0.1",
+    "bun": "1.1.4",
+    "commander": "12.0.0"
+  },
+  "devDependencies": {
+    "@types/bun": "1.1.0"
+  }
+}
-- 
2.47.3