import { describe, expect, it, vi } from "vitest";
import { collectAdbStatus, type AdbConfig, type AdbExecutor } from "../src/adb.js";

const enabledConfig: AdbConfig = {
  enabled: true,
  executable: "/usr/bin/adb",
  serial: "MG4-HEAD-UNIT",
  timeoutMs: 2_500
};

describe("read-only ADB collector", () => {
  it("does not execute anything while integration is disabled", async () => {
    const execute = vi.fn<AdbExecutor>();
    await expect(collectAdbStatus({ ...enabledConfig, enabled: false }, execute)).resolves.toEqual({
      available: false,
      state: "disabled",
      reason: "ADB integration is not configured"
    });
    expect(execute).not.toHaveBeenCalled();
  });

  it("uses only fixed argument arrays for one serial and parses identity and display values", async () => {
    const values = new Map<string, string>([
      ["get-state", "device\n"],
      ["shell getprop ro.product.manufacturer", "SAIC\n"],
      ["shell getprop ro.product.model", "AUTUS\n"],
      ["shell getprop ro.build.version.release", "9\n"],
      ["shell getprop ro.build.version.sdk", "28\n"],
      ["shell getprop ro.build.display.id", "PPR1.181005.003\n"],
      ["shell getprop ro.product.cpu.abi", "arm64-v8a\n"],
      ["shell wm size", "Physical size: 1920x720\n"],
      ["shell wm density", "Physical density: 160\n"]
    ]);
    const calls: string[][] = [];
    const execute: AdbExecutor = async (executable, arguments_, options) => {
      expect(executable).toBe("/usr/bin/adb");
      expect(options).toEqual({ timeout: 2_500, maxBuffer: 16 * 1024 });
      calls.push([...arguments_]);
      return { stdout: values.get(arguments_.slice(2).join(" ")) ?? "", stderr: "" };
    };

    await expect(collectAdbStatus(enabledConfig, execute)).resolves.toMatchObject({
      available: true,
      value: {
        state: "connected",
        identity: {
          manufacturer: { available: true, value: "SAIC" },
          androidVersion: { available: true, value: "9" },
          apiLevel: { available: true, value: 28 },
          abi: { available: true, value: "arm64-v8a" }
        },
        display: {
          size: { available: true, value: { widthPixels: 1920, heightPixels: 720 } },
          densityDpi: { available: true, value: 160 }
        }
      }
    });
    expect(calls).toHaveLength(9);
    for (const arguments_ of calls) {
      expect(arguments_.slice(0, 2)).toEqual(["-s", "MG4-HEAD-UNIT"]);
      expect(arguments_).not.toContain("sh");
      expect(arguments_).not.toContain("-c");
    }
  });

  it("reports authorization and offline failures without leaking command output", async () => {
    const unauthorized: AdbExecutor = async () => {
      throw { stderr: "error: device unauthorized. private-debug-details" };
    };
    await expect(collectAdbStatus(enabledConfig, unauthorized)).resolves.toEqual({
      available: false,
      state: "unauthorized",
      reason: "Authorize this Pi on the infotainment screen"
    });

    const offline: AdbExecutor = async () => ({ stdout: "offline\n", stderr: "" });
    await expect(collectAdbStatus(enabledConfig, offline)).resolves.toMatchObject({
      available: false,
      state: "offline"
    });
  });

  it("automatically discovers exactly one device and refuses ambiguous connections", async () => {
    const calls: string[][] = [];
    const execute: AdbExecutor = async (_executable, arguments_) => {
      calls.push([...arguments_]);
      if (arguments_[0] === "devices") {
        return { stdout: "List of devices attached\nAUTO-MG4\tdevice product:saic model:autus\n", stderr: "" };
      }
      if (arguments_.at(-1) === "get-state") return { stdout: "device\n", stderr: "" };
      return { stdout: "value\n", stderr: "" };
    };
    const status = await collectAdbStatus({ ...enabledConfig, serial: null }, execute);
    expect(status).toMatchObject({ available: true, value: { state: "connected" } });
    expect(calls[0]).toEqual(["devices"]);
    for (const arguments_ of calls.slice(1)) expect(arguments_.slice(0, 2)).toEqual(["-s", "AUTO-MG4"]);

    const multiple: AdbExecutor = async () => ({
      stdout: "List of devices attached\nMG4\tdevice\nPHONE\tdevice\n",
      stderr: ""
    });
    await expect(collectAdbStatus({ ...enabledConfig, serial: null }, multiple)).resolves.toMatchObject({
      available: false,
      state: "ambiguous"
    });
  });

  it("reports an automatically discovered device awaiting authorization", async () => {
    const execute: AdbExecutor = async () => ({
      stdout: "List of devices attached\nAUTO-MG4\tunauthorized\n",
      stderr: ""
    });
    await expect(collectAdbStatus({ ...enabledConfig, serial: null }, execute)).resolves.toMatchObject({
      available: false,
      state: "unauthorized"
    });
  });

  it("keeps individual fields unavailable when a connected device only partially responds", async () => {
    const execute: AdbExecutor = async (_executable, arguments_) => {
      if (arguments_.at(-1) === "get-state") return { stdout: "device\n", stderr: "" };
      if (arguments_.at(-1) === "ro.product.model") throw new Error("read failed");
      return { stdout: "unexpected\n", stderr: "" };
    };
    const status = await collectAdbStatus(enabledConfig, execute);
    expect(status).toMatchObject({
      available: true,
      value: { identity: { model: { available: false, reason: "ADB could not read model" } } }
    });
  });
});