improves block functionality

adds cli compatible prompts/logs
adds logfile function for debug
adds multiselect support
new fieldRename
adds listFieldNames

cli/index.ts

@@ -1,9 +1,10 @@
 import { getAsciiArt } from "../util/asciiArt.ts";
 import { toCase } from "util/caseManagement.ts";
 import { ArgParser } from "./argParser.ts";
-import { colorize } from "./colorize.ts";
+import { colorize } from "./style.ts";
 import { selectMenuInteractive } from "./selectMenu.ts";
 import { TerminalBlock, TerminalLayout } from "./TerminalLayout.ts";
+import { cliAlert, cliLog } from "./prompts.ts";
 
 export class PdfToolsCli {
   private tools: Map<string, ITool> = new Map();
@@ -30,56 +31,98 @@ export class PdfToolsCli {
 
   private async banana() {
     const asciiArt = await getAsciiArt("banana");
-    console.log(colorize(asciiArt, "yellow"));
+    const body = this.terminalLayout.getBlock("body");
+    body.clearAll();
+    cliLog(colorize(asciiArt, "yellow"), body);
   }
 
-  private help() {
-    console.log("BearMetal PDF CLI");
+  private async help() {
+    this.terminalLayout.clear();
+    this.ensmallenHeader("Help");
+    const bodyBlock = this.terminalLayout.getBlock("body");
+    bodyBlock.clearAll();
+    await cliAlert("BearMetal PDF CLI\n", bodyBlock);
+    await this.embiggenHeader();
   }
 
   public async run() {
     try {
-      const lines: string[] = [];
-      for (const t of ["bearmetal:porple", "pdftools:cyan"]) {
-        const [name, color] = t.split(":");
-        const asciiArt = await getAsciiArt(name);
-        lines.push(...colorize(asciiArt, color).split("\n"));
-      }
       const titleBlock = new TerminalBlock();
       this.terminalLayout.register("title", titleBlock);
       const bodyBlock = new TerminalBlock();
       this.terminalLayout.register("body", bodyBlock);
-      titleBlock.setFixedHeight(lines.length);
-      titleBlock.setLines(lines);
+      this.embiggenHeader();
       if (Deno.args.length === 0) {
         // console.log(
         //   colorize("No tool specified. Importing all tools...", "gray"),
         // );
         await this.importTools();
       }
-      this.toolMenu();
+      await this.toolMenu();
     } finally {
       this.terminalLayout.clearAll();
+      Deno.stdin.setRaw(false);
     }
   }
 
   private async toolMenu() {
     const tools = this.tools.keys().toArray();
     const bodyBlock = this.terminalLayout.getBlock("body");
-    const selected = await selectMenuInteractive("Choose a tool", tools, {
-      terminalBlock: bodyBlock,
-    });
-    bodyBlock.clear();
+    bodyBlock.clearAll();
+    bodyBlock.setPreserveHistory(false);
+    const selected = await selectMenuInteractive(
+      "Choose a tool",
+      tools.concat(["Help", "Exit"]),
+      {
+        terminalBlock: bodyBlock,
+      },
+    );
     if (!selected) return;
+    if (selected === "Exit") {
+      return;
+    }
     await this.runTool(selected);
-    this.toolMenu();
+    await this.toolMenu();
   }
 
   private async runTool(toolName: string) {
+    if (toolName === "Help") {
+      return await this.help();
+    }
     const tool = this.tools.get(toolName);
     if (tool) {
+      this.ensmallenHeader(tool.name + " - " + tool.description);
+      const bodyBlock = this.terminalLayout.getBlock("body");
+      bodyBlock.clearAll();
+      tool.setBlock?.(bodyBlock);
       await tool.run();
       await tool.done?.();
+      this.embiggenHeader();
     }
   }
+
+  private ensmallenHeader(subtitle: string) {
+    this.terminalLayout.clear();
+    const titleBlock = this.terminalLayout.getBlock("title");
+    titleBlock.clear();
+    titleBlock.setFixedHeight(3);
+    titleBlock.setLines([
+      colorize("BearMetal PDF Tools", "porple"),
+      colorize(subtitle, "gray"),
+      "-=".repeat(Deno.consoleSize().columns / 2),
+    ]);
+  }
+
+  private async embiggenHeader() {
+    const titleBlock = this.terminalLayout.getBlock("title");
+    titleBlock.clear();
+    const lines: string[] = [];
+    for (const t of ["bearmetal:porple", "pdftools:cyan"]) {
+      const [name, color] = t.split(":");
+      const asciiArt = await getAsciiArt(name);
+      lines.push(...colorize(asciiArt, color).split("\n"));
+    }
+    titleBlock.setFixedHeight(lines.length);
+    titleBlock.setLines(lines);
+  }
 }