import { afterEach, describe, expect, spyOn } from "bun:test"
import { Effect, Layer } from "effect"
import fs from "fs/promises"
import path from "path"
import { pathToFileURL } from "url"
import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
import { FSUtil } from "@opencode-ai/core/fs-util"
import { disposeAllInstances, provideInstance, testInstanceStoreLayer, tmpdirScoped } from "../fixture/fixture"
import { testEffect } from "../lib/effect"

const { Plugin } = await import("../../src/plugin/index")
const { PluginLoader } = await import("../../src/plugin/loader")
const { readPackageThemes } = await import("../../src/plugin/shared")
const { EventV2Bridge } = await import("../../src/event-v2-bridge")
const { Npm } = await import("@opencode-ai/core/npm")
const { TestConfig } = await import("../fixture/config")
const { RuntimeFlags } = await import("../../src/effect/runtime-flags")

afterEach(async () => {
  await disposeAllInstances()
})

const it = testEffect(Layer.mergeAll(CrossSpawnSpawner.defaultLayer, FSUtil.defaultLayer, testInstanceStoreLayer))

function withTmp<T, A, E, R>(
  init: (dir: string) => Promise<T>,
  body: (tmp: { path: string; extra: T }) => Effect.Effect<A, E, R>,
) {
  return Effect.gen(function* () {
    const dir = yield* tmpdirScoped()
    const extra = yield* Effect.promise(() => init(dir))
    return yield* body({ path: dir, extra })
  })
}

function load(dir: string, flags?: Parameters<typeof RuntimeFlags.layer>[0]) {
  const source = path.join(dir, "opencode.json")
  return Effect.gen(function* () {
    const config = yield* Effect.promise(
      () => Bun.file(source).json() as Promise<{ plugin?: Array<string | [string, Record<string, unknown>]> }>,
    )
    const plugins = config.plugin ?? []
    return yield* Effect.gen(function* () {
      const plugin = yield* Plugin.Service
      yield* plugin.list()
    }).pipe(
      Effect.provide(
        Plugin.layer.pipe(
          Layer.provide(EventV2Bridge.defaultLayer),
          Layer.provide(RuntimeFlags.layer({ disableDefaultPlugins: true, ...flags })),
          Layer.provide(
            TestConfig.layer({
              get: () =>
                Effect.succeed({
                  plugin: plugins,
                  plugin_origins: plugins.map((plugin) => ({ spec: plugin, source, scope: "local" as const })),
                }),
              directories: () => Effect.succeed([dir]),
            }),
          ),
        ),
      ),
      provideInstance(dir),
    )
  })
}

describe("plugin.loader.shared", () => {
  it.live("loads a file:// plugin function export", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "plugin.ts")
        const mark = path.join(dir, "called.txt")
        await Bun.write(
          file,
          [
            "export default async () => {",
            `  await Bun.write(${JSON.stringify(mark)}, "called")`,
            "  return {}",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [pathToFileURL(file).href] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(yield* Effect.promise(() => fs.readFile(tmp.extra.mark, "utf8"))).toBe("called")
        }),
    ),
  )

  it.live("deduplicates same function exported as default and named", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "plugin.ts")
        const mark = path.join(dir, "count.txt")
        await Bun.write(mark, "")
        await Bun.write(
          file,
          [
            "const run = async () => {",
            `  const text = await Bun.file(${JSON.stringify(mark)}).text().catch(() => "")`,
            `  await Bun.write(${JSON.stringify(mark)}, text + "1")`,
            "  return {}",
            "}",
            "export default run",
            "export const named = run",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [pathToFileURL(file).href] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(yield* Effect.promise(() => fs.readFile(tmp.extra.mark, "utf8"))).toBe("1")
        }),
    ),
  )

  it.live("uses only default v1 server plugin when present", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "plugin.ts")
        const mark = path.join(dir, "count.txt")
        await Bun.write(
          file,
          [
            "export default {",
            '  id: "demo.v1-default",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "default")`,
            "    return {}",
            "  },",
            "}",
            "export const named = async () => {",
            `  await Bun.write(${JSON.stringify(mark)}, "named")`,
            "  return {}",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [pathToFileURL(file).href] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("default")
        }),
    ),
  )

  it.live("rejects v1 file server plugin without id", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "plugin.ts")
        const mark = path.join(dir, "called.txt")
        await Bun.write(
          file,
          [
            "export default {",
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [pathToFileURL(file).href] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          const called = yield* Effect.promise(() =>
            Bun.file(tmp.extra.mark)
              .text()
              .then(() => true)
              .catch(() => false),
          )

          expect(called).toBe(false)
        }),
    ),
  )

  it.live("rejects v1 plugin that exports server and tui together", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "plugin.ts")
        const mark = path.join(dir, "called.txt")
        await Bun.write(
          file,
          [
            "export default {",
            '  id: "demo.mixed",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "server")`,
            "    return {}",
            "  },",
            "  tui: async () => {},",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [pathToFileURL(file).href] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          const called = yield* Effect.promise(() =>
            Bun.file(tmp.extra.mark)
              .text()
              .then(() => true)
              .catch(() => false),
          )

          expect(called).toBe(false)
        }),
    ),
  )

  it.live("resolves npm plugin specs with explicit and default versions", () =>
    withTmp(
      async (dir) => {
        const acme = path.join(dir, "node_modules", "acme-plugin")
        const scope = path.join(dir, "node_modules", "scope-plugin")
        await fs.mkdir(acme, { recursive: true })
        await fs.mkdir(scope, { recursive: true })
        await Bun.write(
          path.join(acme, "package.json"),
          JSON.stringify({ name: "acme-plugin", type: "module", main: "./index.js" }, null, 2),
        )
        await Bun.write(path.join(acme, "index.js"), "export default { server: async () => ({}) }\n")
        await Bun.write(
          path.join(scope, "package.json"),
          JSON.stringify({ name: "scope-plugin", type: "module", main: "./index.js" }, null, 2),
        )
        await Bun.write(path.join(scope, "index.js"), "export default { server: async () => ({}) }\n")

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: ["acme-plugin", "scope-plugin@2.3.4"] }, null, 2),
        )

        return { acme, scope }
      },
      (tmp) =>
        Effect.gen(function* () {
          const add = spyOn(Npm, "add").mockImplementation(async (pkg) => {
            if (pkg === "acme-plugin") return { directory: tmp.extra.acme, entrypoint: undefined }
            return { directory: tmp.extra.scope, entrypoint: undefined }
          })

          try {
            yield* load(tmp.path)

            expect(add.mock.calls).toContainEqual(["acme-plugin@latest"])
            expect(add.mock.calls).toContainEqual(["scope-plugin@2.3.4"])
          } finally {
            add.mockRestore()
          }
        }),
    ),
  )

  it.live("loads npm server plugin from package ./server export", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mods", "acme-plugin")
        const mark = path.join(dir, "server-called.txt")
        await fs.mkdir(mod, { recursive: true })

        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify(
            {
              name: "acme-plugin",
              type: "module",
              exports: {
                ".": "./index.js",
                "./server": "./server.js",
                "./tui": "./tui.js",
              },
            },
            null,
            2,
          ),
        )
        await Bun.write(path.join(mod, "index.js"), 'import "./main-throws.js"\nexport default {}\n')
        await Bun.write(path.join(mod, "main-throws.js"), 'throw new Error("main loaded")\n')
        await Bun.write(
          path.join(mod, "server.js"),
          [
            "export default {",
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )
        await Bun.write(path.join(mod, "tui.js"), "export default {}\n")

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: ["acme-plugin@1.0.0"] }, null, 2))

        return {
          mod,
          mark,
        }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: tmp.extra.mod, entrypoint: undefined })

          try {
            yield* load(tmp.path)
            expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("called")
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("loads npm server plugin from package server export without leading dot", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mods", "acme-plugin")
        const dist = path.join(mod, "dist")
        const mark = path.join(dir, "server-called.txt")
        await fs.mkdir(dist, { recursive: true })

        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify(
            {
              name: "acme-plugin",
              type: "module",
              exports: {
                ".": "./index.js",
                "./server": "dist/server.js",
              },
            },
            null,
            2,
          ),
        )
        await Bun.write(path.join(mod, "index.js"), 'import "./main-throws.js"\nexport default {}\n')
        await Bun.write(path.join(mod, "main-throws.js"), 'throw new Error("main loaded")\n')
        await Bun.write(
          path.join(dist, "server.js"),
          [
            "export default {",
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: ["acme-plugin@1.0.0"] }, null, 2))

        return {
          mod,
          mark,
        }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: tmp.extra.mod, entrypoint: undefined })

          try {
            yield* load(tmp.path)
            expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("called")
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("loads npm server plugin from package main without leading dot", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mods", "acme-plugin")
        const dist = path.join(mod, "dist")
        const mark = path.join(dir, "main-called.txt")
        await fs.mkdir(dist, { recursive: true })

        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify(
            {
              name: "acme-plugin",
              type: "module",
              main: "dist/index.js",
            },
            null,
            2,
          ),
        )
        await Bun.write(
          path.join(dist, "index.js"),
          [
            "export default {",
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: ["acme-plugin@1.0.0"] }, null, 2))

        return {
          mod,
          mark,
        }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: tmp.extra.mod, entrypoint: undefined })

          try {
            yield* load(tmp.path)
            expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("called")
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("does not use npm package exports dot for server entry", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mods", "acme-plugin")
        const mark = path.join(dir, "dot-server.txt")
        await fs.mkdir(mod, { recursive: true })

        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify({
            name: "acme-plugin",
            type: "module",
            exports: { ".": "./index.js" },
          }),
        )
        await Bun.write(
          path.join(mod, "index.js"),
          [
            "export default {",
            '  id: "demo.dot.server",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: ["acme-plugin@1.0.0"] }, null, 2))

        return { mod, mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: tmp.extra.mod, entrypoint: undefined })

          try {
            yield* load(tmp.path)
            const called = yield* Effect.promise(() =>
              Bun.file(tmp.extra.mark)
                .text()
                .then(() => true)
                .catch(() => false),
            )

            expect(called).toBe(false)
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("rejects npm server export that resolves outside plugin directory", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mods", "acme-plugin")
        const outside = path.join(dir, "outside")
        const mark = path.join(dir, "outside-server.txt")
        await fs.mkdir(mod, { recursive: true })
        await fs.mkdir(outside, { recursive: true })

        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify(
            {
              name: "acme-plugin",
              type: "module",
              exports: {
                ".": "./index.js",
                "./server": "./escape/server.js",
              },
            },
            null,
            2,
          ),
        )
        await Bun.write(path.join(mod, "index.js"), "export default {}\n")
        await Bun.write(
          path.join(outside, "server.js"),
          [
            "export default {",
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "outside")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )
        await fs.symlink(outside, path.join(mod, "escape"), process.platform === "win32" ? "junction" : "dir")

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: ["acme-plugin"] }, null, 2))

        return {
          mod,
          mark,
        }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: tmp.extra.mod, entrypoint: undefined })

          try {
            yield* load(tmp.path)
            const called = yield* Effect.promise(() =>
              Bun.file(tmp.extra.mark)
                .text()
                .then(() => true)
                .catch(() => false),
            )
            expect(called).toBe(false)
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("skips legacy codex and copilot auth plugin specs", () =>
    withTmp(
      async (dir) => {
        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify(
            {
              plugin: ["opencode-openai-codex-auth@1.0.0", "opencode-copilot-auth@1.0.0", "regular-plugin@1.0.0"],
            },
            null,
            2,
          ),
        )
      },
      (_tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: "", entrypoint: undefined })

          try {
            yield* load(_tmp.path)

            const pkgs = install.mock.calls.map((call) => call[0])
            expect(pkgs).toContain("regular-plugin@1.0.0")
            expect(pkgs).not.toContain("opencode-openai-codex-auth@1.0.0")
            expect(pkgs).not.toContain("opencode-copilot-auth@1.0.0")
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("skips broken plugin when install fails", () =>
    withTmp(
      async (dir) => {
        const ok = path.join(dir, "ok.ts")
        const mark = path.join(dir, "ok.txt")
        await Bun.write(
          ok,
          [
            "export default {",
            '  id: "demo.ok",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "ok")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )
        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: ["broken-plugin@9.9.9", pathToFileURL(ok).href] }, null, 2),
        )
        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockRejectedValue(new Error("boom"))

          try {
            yield* load(tmp.path)
            expect(install).toHaveBeenCalledWith("broken-plugin@9.9.9")
            expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("ok")
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("continues loading plugins when plugin init throws", () =>
    withTmp(
      async (dir) => {
        const file = pathToFileURL(path.join(dir, "throws.ts")).href
        const ok = pathToFileURL(path.join(dir, "ok.ts")).href
        const mark = path.join(dir, "ok.txt")
        await Bun.write(
          path.join(dir, "throws.ts"),
          [
            "export default {",
            '  id: "demo.throws",',
            "  server: async () => {",
            '    throw new Error("explode")',
            "  },",
            "}",
            "",
          ].join("\n"),
        )
        await Bun.write(
          path.join(dir, "ok.ts"),
          [
            "export default {",
            '  id: "demo.ok",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "ok")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: [file, ok] }, null, 2))

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("ok")
        }),
    ),
  )

  it.live("continues loading plugins when plugin module has invalid export", () =>
    withTmp(
      async (dir) => {
        const file = pathToFileURL(path.join(dir, "invalid.ts")).href
        const ok = pathToFileURL(path.join(dir, "ok.ts")).href
        const mark = path.join(dir, "ok.txt")
        await Bun.write(
          path.join(dir, "invalid.ts"),
          ["export default {", '  id: "demo.invalid",', "  nope: true,", "}", ""].join("\n"),
        )
        await Bun.write(
          path.join(dir, "ok.ts"),
          [
            "export default {",
            '  id: "demo.ok",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "ok")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: [file, ok] }, null, 2))

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("ok")
        }),
    ),
  )

  it.live("continues loading plugins when plugin import fails", () =>
    withTmp(
      async (dir) => {
        const missing = pathToFileURL(path.join(dir, "missing-plugin.ts")).href
        const ok = pathToFileURL(path.join(dir, "ok.ts")).href
        const mark = path.join(dir, "ok.txt")
        await Bun.write(
          path.join(dir, "ok.ts"),
          [
            "export default {",
            '  id: "demo.ok",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "ok")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )
        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: [missing, ok] }, null, 2))

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(yield* Effect.promise(() => Bun.file(tmp.extra.mark).text())).toBe("ok")
        }),
    ),
  )

  it.live("loads object plugin via plugin.server", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "object-plugin.ts")
        const mark = path.join(dir, "object-called.txt")
        await Bun.write(
          file,
          [
            "const plugin = {",
            '  id: "demo.object",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
            "    return {}",
            "  },",
            "}",
            "export default plugin",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [pathToFileURL(file).href] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(yield* Effect.promise(() => fs.readFile(tmp.extra.mark, "utf8"))).toBe("called")
        }),
    ),
  )

  it.live("passes tuple plugin options into server plugin", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "options-plugin.ts")
        const mark = path.join(dir, "options.json")
        await Bun.write(
          file,
          [
            "const plugin = {",
            '  id: "demo.options",',
            "  server: async (_input, options) => {",
            `    await Bun.write(${JSON.stringify(mark)}, JSON.stringify(options ?? null))`,
            "    return {}",
            "  },",
            "}",
            "export default plugin",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [[pathToFileURL(file).href, { source: "tuple", enabled: true }]] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          expect(
            (yield* (yield* FSUtil.Service).readJson(tmp.extra.mark)) as { source: string; enabled: boolean },
          ).toEqual({
            source: "tuple",
            enabled: true,
          })
        }),
    ),
  )

  it.live("initializes server plugins in config order", () =>
    withTmp(
      async (dir) => {
        const a = path.join(dir, "a-plugin.ts")
        const b = path.join(dir, "b-plugin.ts")
        const marker = path.join(dir, "server-order.txt")
        const aSpec = pathToFileURL(a).href
        const bSpec = pathToFileURL(b).href

        await Bun.write(
          a,
          `import fs from "fs/promises"

export default {
  id: "demo.order.a",
  server: async () => {
    await fs.appendFile(${JSON.stringify(marker)}, "a-start\\n")
    await Bun.sleep(25)
    await fs.appendFile(${JSON.stringify(marker)}, "a-end\\n")
    return {}
  },
}
`,
        )
        await Bun.write(
          b,
          `import fs from "fs/promises"

export default {
  id: "demo.order.b",
  server: async () => {
    await fs.appendFile(${JSON.stringify(marker)}, "b\\n")
    return {}
  },
}
`,
        )

        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ plugin: [aSpec, bSpec] }, null, 2))

        return { marker }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path)
          const lines = (yield* Effect.promise(() => fs.readFile(tmp.extra.marker, "utf8"))).trim().split("\n")
          expect(lines).toEqual(["a-start", "a-end", "b"])
        }),
    ),
  )

  it.live("skips external plugins in pure mode", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "plugin.ts")
        const mark = path.join(dir, "called.txt")
        await Bun.write(
          file,
          [
            "export default {",
            '  id: "demo.pure",',
            "  server: async () => {",
            `    await Bun.write(${JSON.stringify(mark)}, "called")`,
            "    return {}",
            "  },",
            "}",
            "",
          ].join("\n"),
        )

        await Bun.write(
          path.join(dir, "opencode.json"),
          JSON.stringify({ plugin: [pathToFileURL(file).href] }, null, 2),
        )

        return { mark }
      },
      (tmp) =>
        Effect.gen(function* () {
          yield* load(tmp.path, { pure: true })
          const called = yield* Effect.promise(() =>
            fs
              .readFile(tmp.extra.mark, "utf8")
              .then(() => true)
              .catch(() => false),
          )
          expect(called).toBe(false)
        }),
    ),
  )

  it.live("reads oc-themes from package manifest", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mod")
        await fs.mkdir(path.join(mod, "themes"), { recursive: true })
        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify(
            {
              name: "acme-plugin",
              version: "1.0.0",
              "oc-themes": ["themes/one.json", "./themes/one.json", "themes/two.json"],
            },
            null,
            2,
          ),
        )

        return { mod }
      },
      (tmp) =>
        Effect.gen(function* () {
          const file = path.join(tmp.extra.mod, "package.json")
          const fsys = yield* FSUtil.Service
          const json = (yield* fsys.readJson(file)) as Record<string, unknown>
          const list = readPackageThemes("acme-plugin", {
            dir: tmp.extra.mod,
            pkg: file,
            json,
          })

          expect(list).toEqual([
            FSUtil.resolve(path.join(tmp.extra.mod, "themes", "one.json")),
            FSUtil.resolve(path.join(tmp.extra.mod, "themes", "two.json")),
          ])
        }),
    ),
  )

  it.live("handles no-entrypoint tui packages via missing callback", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mods", "acme-plugin")
        await fs.mkdir(path.join(mod, "themes"), { recursive: true })
        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify(
            {
              name: "acme-plugin",
              version: "1.0.0",
              "oc-themes": ["themes/night.json"],
            },
            null,
            2,
          ),
        )
        await Bun.write(path.join(mod, "themes", "night.json"), "{}\n")
        return { mod }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: tmp.extra.mod, entrypoint: undefined })
          const missing: string[] = []

          try {
            const loaded = yield* Effect.promise(() =>
              PluginLoader.loadExternal({
                items: [
                  {
                    spec: "acme-plugin@1.0.0",
                    scope: "local" as const,
                    source: tmp.path,
                  },
                ],
                kind: "tui",
                missing: async (item) => {
                  if (!item.pkg) return
                  const themes = readPackageThemes(item.spec, item.pkg)
                  if (!themes.length) return
                  return {
                    spec: item.spec,
                    target: item.target,
                    themes,
                  }
                },
                report: {
                  missing(_candidate, _retry, message) {
                    missing.push(message)
                  },
                },
              }),
            )

            expect(loaded).toEqual([
              {
                spec: "acme-plugin@1.0.0",
                target: tmp.extra.mod,
                themes: [FSUtil.resolve(path.join(tmp.extra.mod, "themes", "night.json"))],
              },
            ])
            expect(missing).toHaveLength(0)
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("passes package metadata for entrypoint tui plugins", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mods", "acme-plugin")
        await fs.mkdir(path.join(mod, "themes"), { recursive: true })
        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify(
            {
              name: "acme-plugin",
              version: "1.0.0",
              exports: {
                "./tui": "./tui.js",
              },
              "oc-themes": ["themes/night.json"],
            },
            null,
            2,
          ),
        )
        await Bun.write(path.join(mod, "tui.js"), 'export default { id: "demo", tui: async () => {} }\n')
        await Bun.write(path.join(mod, "themes", "night.json"), "{}\n")
        return { mod }
      },
      (tmp) =>
        Effect.gen(function* () {
          const install = spyOn(Npm, "add").mockResolvedValue({ directory: tmp.extra.mod, entrypoint: undefined })

          try {
            const loaded = yield* Effect.promise(() =>
              PluginLoader.loadExternal({
                items: [
                  {
                    spec: "acme-plugin@1.0.0",
                    scope: "local" as const,
                    source: tmp.path,
                  },
                ],
                kind: "tui",
                finish: async (item) => {
                  if (!item.pkg) return
                  return {
                    spec: item.spec,
                    themes: readPackageThemes(item.spec, item.pkg),
                  }
                },
              }),
            )

            expect(loaded).toEqual([
              {
                spec: "acme-plugin@1.0.0",
                themes: [FSUtil.resolve(path.join(tmp.extra.mod, "themes", "night.json"))],
              },
            ])
          } finally {
            install.mockRestore()
          }
        }),
    ),
  )

  it.live("rejects oc-themes path traversal", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "mod")
        await fs.mkdir(mod, { recursive: true })
        const file = path.join(mod, "package.json")
        await Bun.write(file, JSON.stringify({ name: "acme", "oc-themes": ["../escape.json"] }, null, 2))
        return { mod, file }
      },
      (tmp) =>
        Effect.gen(function* () {
          const fsys = yield* FSUtil.Service
          const json = (yield* fsys.readJson(tmp.extra.file)) as Record<string, unknown>
          expect(() =>
            readPackageThemes("acme", {
              dir: tmp.extra.mod,
              pkg: tmp.extra.file,
              json,
            }),
          ).toThrow("outside plugin directory")
        }),
    ),
  )

  it.live("retries failed file plugins once after wait and keeps order", () =>
    withTmp(
      async (dir) => {
        const a = path.join(dir, "a")
        const b = path.join(dir, "b")
        const aSpec = pathToFileURL(a).href
        const bSpec = pathToFileURL(b).href
        await fs.mkdir(a, { recursive: true })
        await fs.mkdir(b, { recursive: true })
        return { a, b, aSpec, bSpec }
      },
      (tmp) =>
        Effect.gen(function* () {
          let wait = 0
          const calls: Array<[string, boolean]> = []

          const loaded = yield* Effect.promise(() =>
            PluginLoader.loadExternal({
              items: [tmp.extra.aSpec, tmp.extra.bSpec].map((spec) => ({
                spec,
                scope: "local" as const,
                source: tmp.path,
              })),
              kind: "tui",
              wait: async () => {
                wait += 1
                await Bun.write(path.join(tmp.extra.a, "index.ts"), "export default {}\n")
                await Bun.write(path.join(tmp.extra.b, "index.ts"), "export default {}\n")
              },
              report: {
                start(candidate, retry) {
                  calls.push([candidate.plan.spec, retry])
                },
              },
            }),
          )

          expect(wait).toBe(1)
          expect(calls).toEqual([
            [tmp.extra.aSpec, false],
            [tmp.extra.bSpec, false],
            [tmp.extra.aSpec, true],
            [tmp.extra.bSpec, true],
          ])
          expect(loaded.map((item) => item.spec)).toEqual([tmp.extra.aSpec, tmp.extra.bSpec])
        }),
    ),
  )

  it.live("does not retry permanent file plugin entry errors", () =>
    withTmp(
      async (dir) => {
        const mod = path.join(dir, "bad-entry")
        const spec = pathToFileURL(mod).href
        await fs.mkdir(mod, { recursive: true })
        await Bun.write(
          path.join(mod, "package.json"),
          JSON.stringify({ exports: { "./tui": "../outside.js" } }, null, 2),
        )
        return { spec }
      },
      (tmp) =>
        Effect.gen(function* () {
          let wait = 0
          const errors: Array<[string, boolean]> = []

          const loaded = yield* Effect.promise(() =>
            PluginLoader.loadExternal({
              items: [
                {
                  spec: tmp.extra.spec,
                  scope: "local" as const,
                  source: tmp.path,
                },
              ],
              kind: "tui",
              wait: async () => {
                wait += 1
              },
              report: {
                error(_candidate, retry, stage) {
                  errors.push([stage, retry])
                },
              },
            }),
          )

          expect(loaded).toEqual([])
          expect(wait).toBe(0)
          expect(errors).toEqual([["entry", false]])
        }),
    ),
  )

  it.live("does not retry file plugins when finish returns undefined", () =>
    withTmp(
      async (dir) => {
        const file = path.join(dir, "plugin.ts")
        const spec = pathToFileURL(file).href
        await Bun.write(file, "export default {}\n")
        return { spec }
      },
      (tmp) =>
        Effect.gen(function* () {
          let wait = 0
          let count = 0

          const loaded = yield* Effect.promise(() =>
            PluginLoader.loadExternal({
              items: [
                {
                  spec: tmp.extra.spec,
                  scope: "local" as const,
                  source: tmp.path,
                },
              ],
              kind: "tui",
              wait: async () => {
                wait += 1
              },
              finish: async () => {
                count += 1
              },
            }),
          )

          expect(wait).toBe(0)
          expect(count).toBe(1)
          expect(loaded).toEqual([])
        }),
    ),
  )

  it.live("does not wait or retry npm plugin failures", () =>
    Effect.gen(function* () {
      const install = spyOn(Npm, "add").mockRejectedValue(new Error("boom"))
      let wait = 0
      const errors: Array<[string, boolean]> = []

      try {
        const loaded = yield* Effect.promise(() =>
          PluginLoader.loadExternal({
            items: [
              {
                spec: "acme-plugin@1.0.0",
                scope: "local" as const,
                source: "test",
              },
            ],
            kind: "tui",
            wait: async () => {
              wait += 1
            },
            report: {
              error(_candidate, retry, stage) {
                errors.push([stage, retry])
              },
            },
          }),
        )

        expect(loaded).toEqual([])
        expect(wait).toBe(0)
        expect(errors).toEqual([["install", false]])
      } finally {
        install.mockRestore()
      }
    }),
  )
})
