////
// The shell runs on the server and processes input, returning output.

import type { Message, CommandResult } from "../shared/types.js"
import { addInput, setStatus, addOutput } from "./scrollback.js"
import { send } from "./websocket.js"
import { randomID } from "../shared/utils.js"
import { addToHistory } from "./history.js"
import { browserCommands, cacheCommands } from "./commands.js"

export function runCommand(input: string) {
    if (!input.trim()) return

    const id = randomID()

    addToHistory(input)
    addInput(id, input)

    const [cmd = "", ...args] = input.split(" ")

    if (browserCommands[cmd]) {
        const result = browserCommands[cmd]()
        if (typeof result === "string")
            addOutput(id, result)
        setStatus(id, "ok")
    } else {
        send({ id, type: "input", data: input })
    }
}

// message received from server
export function handleMessage(msg: Message) {
    if (msg.type === "output") {
        handleOutput(msg)
    } else if (msg.type === "commands") {
        cacheCommands(msg.data as string[])
    } else if (msg.type === "error") {
        console.error(msg.data)
    } else {
        console.error("unknown message type", msg)
    }
}

function handleOutput(msg: Message) {
    const result = msg.data as CommandResult
    setStatus(msg.id!, result.status)
    addOutput(msg.id!, result.output)
}