// Shared fixtures. Every test works in its own temporary directory and
// points MOSAIC_CONFIG there; nothing reads the real ~/.config.

import { chmodSync, cpSync, mkdirSync, mkdtempSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { dirname, join, resolve } from "node:path";
import { fileURLToPath } from "node:url";

export const REPO = resolve(dirname(fileURLToPath(import.meta.url)), "..", "..", "..");
export const REPO_ROLES = join(REPO, "roles");
export const FAR_DATE = "2099-01-01";

export function tmp() {
  return mkdtempSync(join(tmpdir(), "mosaic-business-"));
}

export function writeJson(file, value, mode = 0o600) {
  mkdirSync(dirname(file), { recursive: true });
  writeFileSync(file, typeof value === "string" ? value : `${JSON.stringify(value, null, 2)}\n`);
  chmodSync(file, mode);
  return file;
}

// A token file with a placeholder value; the package never reads it.
export function tokenFile(dir, name) {
  mkdirSync(dir, { recursive: true, mode: 0o700 });
  const file = join(dir, name);
  writeFileSync(file, "placeholder-not-a-token");
  chmodSync(file, 0o600);
  return file;
}

// A copy of the shipped role files in a scratch roles directory.
export function rolesCopy(root) {
  const dir = join(root, "roles");
  cpSync(REPO_ROLES, dir, { recursive: true });
  return dir;
}

// A complete valid business document for the shipped four roles, with
// token files under `<root>/secrets`, and a project root under `<root>`.
export function businessDoc(root, id = "acme") {
  const secrets = join(root, "secrets");
  const ref = (role, service) => service === "gitea"
    ? { file: tokenFile(secrets, `${role}-gitea.token`), rotateBy: FAR_DATE }
    : { file: tokenFile(secrets, `${role}-vikunja.token`), expires: FAR_DATE };
  const role = (definition, botId, extra = {}) => ({
    definition,
    tracker: { bot: `bot-${id}-${definition}`, botId },
    credentials: { gitea: ref(definition, "gitea"), vikunja: ref(definition, "vikunja") },
    ...extra,
  });
  const projectRoot = join(root, "project");
  mkdirSync(projectRoot, { recursive: true });
  return {
    businessVersion: 1,
    id,
    human: "jason",
    arbiters: { delivery: "pm", technical: "cto" },
    projects: { stack: { root: projectRoot } },
    vars: { "tracker.baseUrl": "http://127.0.0.1:3456", "gitea.baseUrl": "https://git.example", "tracker.pollSeconds": 60 },
    tracker: {
      sync: { bot: `bot-${id}-sync`, botId: 9, credentials: { vikunja: ref("sync", "vikunja") } },
      labels: {},
    },
    roles: {
      pm: role("pm", 3, { holder: "sage", vars: { harness: "pi", model: "claude-opus-5-5" } }),
      cto: role("cto", 4, { holder: "darkwing", vars: { harness: "claude-code" } }),
      coder: role("coder", 5, { vars: { harness: "pi", "limits.network": "none" } }),
      reviewer: role("reviewer", 6),
    },
    launch: { by: "pm", instances: ["coder", "reviewer"], max: { opus: 2, sonnet: 4 } },
  };
}

// The system config file mosaic-config.mjs validates, under `root`.
export function systemConfig(root) {
  const file = join(root, "config", "config.json");
  writeJson(file, {
    configVersion: 1,
    environment: "development",
    dataRoot: join(root, "data"),
    execution: { backend: "docker", provider: "zai", model: "glm-5.3-flash", adapter: "mock" },
  });
  return file;
}

// The checked system layer, as systemVars() returns it, without spawning.
export function systemFor(root) {
  return {
    environment: "development",
    dataRoot: join(root, "data"),
    "execution.backend": "docker",
    "execution.provider": "zai",
    "execution.model": "glm-5.3-flash",
    "execution.adapter": "mock",
  };
}