import { expect } from "bun:test"
import { AppFileSystem } from "@opencode-ai/core/filesystem"
import { Effect, Layer } from "effect"
import { FetchHttpClient } from "effect/unstable/http"
import path from "path"
import { pathToFileURL } from "url"
import { Agent } from "../../src/agent/agent"
import { Bus } from "../../src/bus"
import { Config } from "../../src/config/config"
import { Env } from "../../src/env"
import { RuntimeFlags } from "../../src/effect/runtime-flags"
import { Plugin } from "../../src/plugin"
import { AccountTest } from "../fake/account"
import { AuthTest } from "../fake/auth"
import { NpmTest } from "../fake/npm"
import { ProviderTest } from "../fake/provider"
import { SkillTest } from "../fake/skill"
import { testEffect } from "../lib/effect"
import { PLUGIN_AGENT } from "../fixture/agent-plugin.constants"

// `it.instance` skips InstanceBootstrap so FileWatcher / LSP / MCP don't spin
// up — those services hang during scope teardown on Windows and aren't needed
// to verify plugin → config hook → Agent.list.
const pluginUrl = pathToFileURL(path.join(import.meta.dir, "..", "fixture", "agent-plugin.ts")).href

const provider = ProviderTest.fake()
const configLayer = Config.layer.pipe(
  Layer.provide(AppFileSystem.defaultLayer),
  Layer.provide(Env.defaultLayer),
  Layer.provide(AuthTest.empty),
  Layer.provide(AccountTest.empty),
  Layer.provide(NpmTest.noop),
  Layer.provide(FetchHttpClient.layer),
)
const pluginLayer = Plugin.layer.pipe(
  Layer.provide(Bus.layer),
  Layer.provide(configLayer),
  Layer.provide(RuntimeFlags.layer({ disableDefaultPlugins: true })),
)
const agentLayer = Agent.layer.pipe(
  Layer.provide(configLayer),
  Layer.provide(AuthTest.empty),
  Layer.provide(SkillTest.empty),
  Layer.provide(provider.layer),
  Layer.provide(pluginLayer),
  Layer.provide(RuntimeFlags.layer({ disableDefaultPlugins: true })),
)

const it = testEffect(Layer.mergeAll(agentLayer, pluginLayer))

it.instance(
  "plugin-registered agents appear in Agent.list",
  () =>
    Effect.gen(function* () {
      yield* Plugin.Service.use((p) => p.init())
      const agents = yield* Agent.use.list()
      const added = agents.find((agent) => agent.name === PLUGIN_AGENT.name)
      expect(added?.description).toBe(PLUGIN_AGENT.description)
      expect(added?.mode).toBe(PLUGIN_AGENT.mode)
    }),
  { config: { plugin: [pluginUrl] } },
)