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|
/**
* Pure argument parser — zero I/O, zero ambient state.
*
* Parses process.argv-style strings into a discriminated command union.
* Validates required flags and reports unknown flags as errors.
*/
export type ReasoningEffort = "low" | "medium" | "high" | "xhigh" | "max";
const VALID_EFFORTS: readonly ReasoningEffort[] = ["low", "medium", "high", "xhigh", "max"];
export function isValidEffort(value: string): value is ReasoningEffort {
return (VALID_EFFORTS as readonly string[]).includes(value);
}
export type ParsedCommand =
| { readonly kind: "models"; readonly server: string }
| {
readonly kind: "chat";
readonly server: string;
readonly modelName: string;
readonly text?: string | undefined;
readonly file?: string | undefined;
readonly cwd?: string | undefined;
readonly conversationId?: string | undefined;
readonly reasoningEffort?: ReasoningEffort | undefined;
readonly showReasoning: boolean;
readonly open: boolean;
readonly workspaceId?: string | undefined;
}
| {
readonly kind: "list";
readonly server: string;
readonly query?: string;
readonly status?: string;
readonly all: boolean;
}
| { readonly kind: "compact"; readonly server: string; readonly conversationId: string }
| { readonly kind: "open"; readonly server: string; readonly conversationId: string }
| { readonly kind: "read"; readonly server: string; readonly conversationId: string }
| {
readonly kind: "send";
readonly server: string;
readonly conversationId: string;
readonly text?: string | undefined;
readonly file?: string | undefined;
readonly queue: boolean;
readonly open: boolean;
readonly cwd?: string;
readonly reasoningEffort?: ReasoningEffort;
readonly workspaceId?: string;
}
| { readonly kind: "stop"; readonly server: string; readonly conversationId: string }
| { readonly kind: "help" }
| { readonly kind: "error"; readonly message: string };
interface ParseOpts {
readonly defaultServer: string;
}
export function parseArgs(argv: readonly string[], opts: ParseOpts): ParsedCommand {
if (argv.length === 0) {
return { kind: "help" };
}
const first = argv[0] as string;
if (first === "--help" || first === "-h") {
return { kind: "help" };
}
if (first === "models") {
let server = opts.defaultServer;
for (let i = 1; i < argv.length; i++) {
if (argv[i] === "--server" && i + 1 < argv.length) {
server = argv[++i] as string;
} else {
return { kind: "error", message: `Unknown argument for 'models': ${argv[i]}` };
}
}
return { kind: "models", server };
}
if (first === "list") {
let server = opts.defaultServer;
let query: string | undefined;
let status: string | undefined;
let all = false;
for (let i = 1; i < argv.length; i++) {
const arg = argv[i] as string;
if (arg === "--server") {
if (i + 1 >= argv.length) return { kind: "error", message: "--server requires a value" };
server = argv[++i] as string;
} else if (arg === "--status") {
if (i + 1 >= argv.length) return { kind: "error", message: "--status requires a value" };
status = argv[++i];
} else if (arg === "--all") {
all = true;
} else if (arg.startsWith("--")) {
return { kind: "error", message: `Unknown flag: ${arg}` };
} else if (query !== undefined) {
return { kind: "error", message: `Unexpected argument for 'list': ${arg}` };
} else {
query = arg;
}
}
return {
kind: "list",
server,
...(query !== undefined && { query }),
...(status !== undefined && { status }),
all,
};
}
if (first === "compact") {
let server = opts.defaultServer;
let conversationId: string | undefined;
for (let i = 1; i < argv.length; i++) {
const arg = argv[i] as string;
if (arg === "--server") {
if (i + 1 >= argv.length) return { kind: "error", message: "--server requires a value" };
server = argv[++i] as string;
} else if (arg.startsWith("--")) {
return { kind: "error", message: `Unknown flag: ${arg}` };
} else if (conversationId !== undefined) {
return { kind: "error", message: `Unexpected argument for 'compact': ${arg}` };
} else {
conversationId = arg;
}
}
if (conversationId === undefined) {
return { kind: "error", message: "'compact' requires a conversation id" };
}
return { kind: "compact", server, conversationId };
}
if (first === "stop") {
let server = opts.defaultServer;
let conversationId: string | undefined;
for (let i = 1; i < argv.length; i++) {
const arg = argv[i] as string;
if (arg === "--server") {
if (i + 1 >= argv.length) return { kind: "error", message: "--server requires a value" };
server = argv[++i] as string;
} else if (arg.startsWith("--")) {
return { kind: "error", message: `Unknown flag: ${arg}` };
} else if (conversationId !== undefined) {
return { kind: "error", message: `Unexpected argument for 'stop': ${arg}` };
} else {
conversationId = arg;
}
}
if (conversationId === undefined) {
return { kind: "error", message: "'stop' requires a conversation id" };
}
return { kind: "stop", server, conversationId };
}
if (first === "read") {
let server = opts.defaultServer;
let conversationId: string | undefined;
for (let i = 1; i < argv.length; i++) {
const arg = argv[i] as string;
if (arg === "--server") {
if (i + 1 >= argv.length) return { kind: "error", message: "--server requires a value" };
server = argv[++i] as string;
} else if (arg.startsWith("--")) {
return { kind: "error", message: `Unknown flag: ${arg}` };
} else if (conversationId !== undefined) {
return { kind: "error", message: `Unexpected argument for 'read': ${arg}` };
} else {
conversationId = arg;
}
}
if (conversationId === undefined) {
return { kind: "error", message: "'read' requires a conversation id" };
}
return { kind: "read", server, conversationId };
}
if (first === "open") {
let server = opts.defaultServer;
let conversationId: string | undefined;
for (let i = 1; i < argv.length; i++) {
const arg = argv[i] as string;
if (arg === "--server") {
if (i + 1 >= argv.length) return { kind: "error", message: "--server requires a value" };
server = argv[++i] as string;
} else if (arg.startsWith("--")) {
return { kind: "error", message: `Unknown flag: ${arg}` };
} else if (conversationId !== undefined) {
return { kind: "error", message: `Unexpected argument for 'open': ${arg}` };
} else {
conversationId = arg;
}
}
if (conversationId === undefined) {
return { kind: "error", message: "'open' requires a conversation id" };
}
return { kind: "open", server, conversationId };
}
if (first === "send") {
let server = opts.defaultServer;
let conversationId: string | undefined;
let text: string | undefined;
let file: string | undefined;
let queue = false;
let open = false;
let cwd: string | undefined;
let reasoningEffort: ReasoningEffort | undefined;
let workspaceId: string | undefined;
for (let i = 1; i < argv.length; i++) {
const arg = argv[i] as string;
switch (arg) {
case "--server":
if (i + 1 >= argv.length) return { kind: "error", message: "--server requires a value" };
server = argv[++i] as string;
break;
case "--text":
if (i + 1 >= argv.length) return { kind: "error", message: "--text requires a value" };
text = argv[++i];
break;
case "--file":
if (i + 1 >= argv.length) return { kind: "error", message: "--file requires a value" };
file = argv[++i];
break;
case "--queue":
queue = true;
break;
case "--open":
open = true;
break;
case "--cwd":
if (i + 1 >= argv.length) return { kind: "error", message: "--cwd requires a value" };
cwd = argv[++i];
break;
case "--effort": {
if (i + 1 >= argv.length)
return {
kind: "error",
message: `--effort requires a value (one of: ${VALID_EFFORTS.join(", ")})`,
};
const val = argv[++i] as string;
if (!isValidEffort(val))
return {
kind: "error",
message: `Invalid effort level "${val}". Must be one of: ${VALID_EFFORTS.join(", ")}`,
};
reasoningEffort = val;
break;
}
case "--workspace":
case "-w":
if (i + 1 >= argv.length)
return { kind: "error", message: "--workspace requires a value" };
workspaceId = argv[++i];
break;
default:
if (arg.startsWith("--")) return { kind: "error", message: `Unknown flag: ${arg}` };
if (conversationId !== undefined)
return { kind: "error", message: `Unexpected argument for 'send': ${arg}` };
conversationId = arg;
}
}
if (conversationId === undefined) {
return { kind: "error", message: "'send' requires a conversation id" };
}
if (!text && !file) {
return {
kind: "error",
message: "At least one of --text or --file is required for 'send'",
};
}
return {
kind: "send",
server,
conversationId,
text,
file,
queue,
open,
...(cwd !== undefined && { cwd }),
...(reasoningEffort !== undefined && { reasoningEffort }),
...(workspaceId !== undefined && { workspaceId }),
};
}
// Chat mode: first arg is the model name
const modelName = first;
let text: string | undefined;
let file: string | undefined;
let cwd: string | undefined;
let conversationId: string | undefined;
let reasoningEffort: ReasoningEffort | undefined;
let showReasoning = false;
let open = false;
let server = opts.defaultServer;
let workspaceId: string | undefined;
for (let i = 1; i < argv.length; i++) {
const arg = argv[i] as string;
switch (arg) {
case "--text":
if (i + 1 >= argv.length) return { kind: "error", message: "--text requires a value" };
text = argv[++i];
break;
case "--file":
if (i + 1 >= argv.length) return { kind: "error", message: "--file requires a value" };
file = argv[++i];
break;
case "--cwd":
if (i + 1 >= argv.length) return { kind: "error", message: "--cwd requires a value" };
cwd = argv[++i];
break;
case "--conversation":
if (i + 1 >= argv.length)
return { kind: "error", message: "--conversation requires a value" };
conversationId = argv[++i];
break;
case "--server":
if (i + 1 >= argv.length) return { kind: "error", message: "--server requires a value" };
server = argv[++i] as string;
break;
case "--show-reasoning":
showReasoning = true;
break;
case "--open":
open = true;
break;
case "--effort":
if (i + 1 >= argv.length)
return {
kind: "error",
message: `--effort requires a value (one of: ${VALID_EFFORTS.join(", ")})`,
};
{
const val = argv[++i] as string;
if (!isValidEffort(val))
return {
kind: "error",
message: `Invalid effort level "${val}". Must be one of: ${VALID_EFFORTS.join(", ")}`,
};
reasoningEffort = val;
}
break;
case "--workspace":
case "-w":
if (i + 1 >= argv.length) return { kind: "error", message: "--workspace requires a value" };
workspaceId = argv[++i];
break;
default:
return { kind: "error", message: `Unknown flag: ${arg}` };
}
}
if (!text && !file) {
return {
kind: "error",
message: "At least one of --text or --file is required for a chat command",
};
}
return {
kind: "chat",
server,
modelName,
text,
file,
cwd,
conversationId,
reasoningEffort,
showReasoning,
open,
...(workspaceId !== undefined && { workspaceId }),
};
}
|
