feat: working-ish shell and terminal

src/shell/Wush.ts

@@ -6,6 +6,9 @@ import type { EventBroadcaster } from '../utils/EventBroadcaster'
 import { Shell } from './Shell'
 
 export class Wush extends Shell {
+    private buffer: string[] = []
+    private bufferPos: number = 0
+
     constructor(broadcaster: EventBroadcaster, terminal: Terminal) {
         super(broadcaster, terminal)
     }
@@ -21,20 +24,63 @@ export class Wush extends Shell {
         this.terminal.Write('hi -> ')
     }
 
+    PushToBuffer(text: string) {
+        text.split('').forEach(char => {
+            this.buffer.splice(this.bufferPos, 0, char)
+            this.bufferPos++
+        })
+
+        console.log(this.buffer)
+    }
+
+    RemoveLastCharsFromBuffer(amount: number) {
+        this.buffer.splice(this.buffer.length - amount, amount)
+        this.bufferPos -= amount
+
+        console.log(this.buffer)
+    }
+
+    MoveBufferPos(index: number, absolute: boolean = false) {
+        this.bufferPos = Math.max(absolute ? index : this.bufferPos + index, 0)
+    }
+
+    FlushBuffer() {
+        this.buffer = []
+        this.bufferPos = 0
+    }
+
+    ExecuteBuffer() {
+        const args = this.buffer.join('').split(' ')
+        this.FlushBuffer()
+
+        console.log(`Executing ${args[0]} with args '${args}'`)
+    }
+
     HandleKeyInput(key: string, isCharacter: boolean) {
-        if (!isCharacter)
+        if (!isCharacter) {
             switch (key) {
+                case 'ArrowLeft':
+                    this.terminal.MoveCursor(-1, 0)
+                    this.MoveBufferPos(-1)
+                    break
+                case 'ArrowRight':
+                    this.terminal.MoveCursor(1, 0)
+                    this.MoveBufferPos(1)
+                    break
                 case 'Backspace':
                     this.terminal.RemoveCell()
+                    this.RemoveLastCharsFromBuffer(1)
                     this.terminal.MoveCursor(-1, 0)
                     break
                 case 'Enter':
-                    this.terminal.MoveCursor(0, 4, { x: true, y: false })
+                    this.terminal.MoveCursor(0, 1, { x: true, y: false })
+                    this.ExecuteBuffer()
                     this.Prompt()
                     break
             }
-        else {
-            this.terminal.Write(key)
+        } else {
+            this.terminal.InsertCell(key)
+            this.PushToBuffer(key)
             this.terminal.MoveCursor(1, 0)
         }
     }