initial cli api, some movement on tool selection

cli/index.ts

@@ -0,0 +1,64 @@
+import { getAsciiArt } from "../util/asciiArt.ts";
+import { toCase } from "util/caseManagement.ts";
+import { ArgParser } from "./argParser.ts";
+import { colorize } from "./colorize.ts";
+import { selectMenuInteractive } from "./selectMenu.ts";
+
+export class PdfToolsCli {
+  private tools: Map<string, ITool> = new Map();
+
+  async importTools(tools?: string) {
+    tools = tools?.replace(/\/$/, "").replace(/^\.?\//, "") || "tools";
+    for (const toolfile of Deno.readDirSync(tools)) {
+      if (toolfile.isFile) {
+        const tool = await import(
+          Deno.cwd() + "/" + tools + "/" + toolfile.name
+        );
+        if (tool.default) {
+          this.tools.set(
+            toCase(toolfile.name.replace(".ts", ""), "title"),
+            tool.default,
+          );
+        }
+      }
+    }
+  }
+
+  private async banana() {
+    const asciiArt = await getAsciiArt("banana");
+    console.log(colorize(asciiArt, "yellow"));
+  }
+
+  private help() {
+    console.log("BearMetal PDF CLI");
+  }
+
+  public async run() {
+    console.clear();
+    let lineCount = 0;
+    for (const t of ["bearmetal:porple", "pdftools:cyan"]) {
+      const [name, color] = t.split(":");
+      const asciiArt = await getAsciiArt(name);
+      console.log(colorize(asciiArt, color));
+      lineCount += asciiArt.split("\n").length;
+    }
+    if (Deno.args.length === 0) {
+      console.log(
+        colorize("No tool specified. Importing all tools...", "gray"),
+      );
+      await this.importTools();
+    }
+    const args = ArgParser.parse(Deno.args);
+    this.toolMenu(Deno.consoleSize().rows - lineCount);
+  }
+
+  private async toolMenu(space?: number) {
+    const tools = this.tools.keys().toArray();
+    const selected = await selectMenuInteractive("Choose a tool", tools);
+    if (!selected) return;
+    const tool = this.tools.get(toCase(selected, "camel"));
+    if (tool) {
+      await tool.run();
+    }
+  }
+}