import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
import { writeFileSync, existsSync } from "node:fs";
import { resolve } from "node:path";
import type { Config } from "../config.js";
import { generateServerConfig } from "../templates/server-config.js";
export function registerServerConfig(
server: McpServer,
config: Config
): void {
server.registerTool(
"server_config",
{
description:
"Generate a dedicated server config (server.json) for testing an Arma Reforger mod locally. Configures ports, mod list, scenario, and game properties.",
inputSchema: {
name: z
.string()
.min(1)
.describe("Server display name (e.g., 'My Mod Test Server')"),
modName: z
.string()
.optional()
.describe("Addon ID from .gproj (e.g., 'MyCustomMod')"),
modId: z
.string()
.optional()
.describe("Addon GUID from .gproj"),
scenarioId: z
.string()
.optional()
.describe(
"Scenario resource path (e.g., '{GUID}Missions/MissionHeader.conf')"
),
maxPlayers: z
.number()
.min(1)
.max(128)
.optional()
.describe("Maximum players (default 32)"),
port: z
.number()
.optional()
.describe("Game host port (default 2001)"),
a2sPort: z
.number()
.optional()
.describe("A2S query port (default 17777)"),
visible: z
.boolean()
.optional()
.describe("Show in server browser (default false for local testing)"),
password: z
.string()
.optional()
.describe("Server password (empty = no password)"),
projectPath: z
.string()
.optional()
.describe("Project root to write server.json. Uses configured default if omitted."),
},
},
async ({
name,
modName,
modId,
scenarioId,
maxPlayers,
port,
a2sPort,
visible,
password,
projectPath,
}) => {
const basePath = projectPath || config.projectPath;
try {
const content = generateServerConfig({
name,
modName,
modId,
scenarioId,
maxPlayers,
port,
a2sPort,
visible,
password,
});
if (basePath) {
const targetPath = resolve(basePath, "server.json");
if (existsSync(targetPath)) {
return {
content: [
{
type: "text",
text: `File already exists: server.json\n\nGenerated content (not written):\n\n\`\`\`json\n${content}\n\`\`\``,
},
],
};
}
writeFileSync(targetPath, content, "utf-8");
return {
content: [
{
type: "text",
text: `Server config created: server.json\n\n\`\`\`json\n${content}\n\`\`\`\n\nLaunch with: ArmaReforgerServer.exe -config server.json`,
},
],
};
}
return {
content: [
{
type: "text",
text: `Generated server config (no project path — not written to disk):\n\n\`\`\`json\n${content}\n\`\`\`\n\nSet ENFUSION_PROJECT_PATH to write files automatically.`,
},
],
};
} catch (e) {
const msg = e instanceof Error ? e.message : String(e);
return {
content: [
{ type: "text", text: `Error creating server config: ${msg}` },
],
};
}
}
);
}
