import { describe, expect, test, beforeEach, mock } from "bun:test"
import type { PermissionRequest } from "@/types/permission"

// Mock SDK client that records permission.reply / question.reply calls
const replyCalls: Array<{ method: string; params: Record<string, unknown> }> = []
let sessionRevertResult: { data?: unknown; error?: unknown; response?: { status?: number } } = {}

const mockScopedClient = {
  permission: {
    reply: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "permission.reply", params })
      return Promise.resolve({ data: true })
    }),
  },
  question: {
    reply: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "question.reply", params })
      return Promise.resolve({ data: true })
    }),
    reject: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "question.reject", params })
      return Promise.resolve({ data: true })
    }),
  },
}

const mockSdk = {
  session: {
    messages: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "session.messages", params })
      return Promise.resolve({ data: [] })
    }),
    revert: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "session.revert", params })
      return Promise.resolve(sessionRevertResult)
    }),
    abort: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "session.abort", params })
      return Promise.resolve({ data: true })
    }),
  },
  permission: {
    reply: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "permission.reply", params })
      return Promise.resolve({ data: true })
    }),
  },
  question: {
    reply: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "question.reply", params })
      return Promise.resolve({ data: true })
    }),
    reject: mock((params: Record<string, unknown>) => {
      replyCalls.push({ method: "question.reject", params })
      return Promise.resolve({ data: true })
    }),
  },
}

// Mock opencodeClient singleton
mock.module("@/lib/opencode/client", () => ({
  opencodeClient: {
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    getScopedSdkClient: (_: string) => mockScopedClient,
    getDirectory: () => "/test/project",
    replyToPermission: mock((requestId: string, reply: string, options?: { directory?: string | null }) => {
      replyCalls.push({ method: "permission.reply", params: { requestID: requestId, reply, directory: options?.directory } })
      return Promise.resolve(true)
    }),
    replyToQuestion: mock((requestId: string, answers: string[] | string[][], directory?: string | null) => {
      replyCalls.push({ method: "question.reply", params: { requestID: requestId, answers, directory } })
      return Promise.resolve(true)
    }),
    revertSession: mock((sessionId: string, messageId: string, partId?: string, directory?: string | null) => {
      replyCalls.push({
        method: "session.revert",
        params: { sessionID: sessionId, messageID: messageId, partID: partId, directory },
      })
      if (sessionRevertResult.error) {
        const status = sessionRevertResult.response?.status
        throw new Error(`session.revert failed${status ? ` (${status})` : ""}: rejected`)
      }
      return Promise.resolve(sessionRevertResult.data)
    }),
  },
}))

// Mock useConfigStore
mock.module("@/stores/useConfigStore", () => ({
  useConfigStore: {
    getState: () => ({
      isConnected: true,
      hasEverConnected: true,
    }),
  },
}))

// Mock useSessionUIStore
mock.module("./session-ui-store", () => ({
  useSessionUIStore: {
    getState: () => ({
      getDirectoryForSession: (sessionId: string) => {
        if (sessionId === "session-a") return "/test/project"
        if (sessionId === "session-b") return "/other/project"
        return null
      },
    }),
  },
}))

// Mock useInputStore
const inputState = {
  pendingInputText: "",
  pendingInputMode: "normal" as const,
  attachedFiles: [],
  clearAttachedFiles: () => {
    inputState.attachedFiles = []
  },
  addRestoredAttachment: (attachment: never) => {
    inputState.attachedFiles = [...inputState.attachedFiles, attachment]
  },
}

mock.module("./input-store", () => ({
  useInputStore: {
    getState: () => inputState,
    setState: (patch: Partial<typeof inputState>) => Object.assign(inputState, patch),
  },
}))

// Mock useGlobalSessionsStore (imported but not used in permission functions)
mock.module("@/stores/useGlobalSessionsStore", () => ({
  useGlobalSessionsStore: {},
}))

// Mock sync-refs (imported but not used in permission functions)
mock.module("./sync-refs", () => ({
  registerSessionDirectory: () => {},
}))

import { create, type StoreApi } from "zustand"
import { INITIAL_STATE } from "./types"
import type { DirectoryStore } from "./child-store"
import type { Message, OpencodeClient, Part, Session } from "@opencode-ai/sdk/v2/client"

function createStore(
  permissions: Record<string, PermissionRequest[]>,
  state?: Partial<DirectoryStore>,
): StoreApi<DirectoryStore> {
  return create<DirectoryStore>()((set) => ({
    ...INITIAL_STATE,
    ...state,
    permission: permissions,
    patch: (partial) => set(partial),
    replace: (next) => set(next),
  }))
}

function createChildStores(entries: Array<[string, StoreApi<DirectoryStore>]>) {
  return {
    children: new Map(entries),
    ensureChild: (dir: string) => {
      const store = new Map(entries).get(dir)
      if (!store) throw new Error(`No store for ${dir}`)
      return store
    },
  } as unknown as import("./child-store").ChildStoreManager
}

describe("respondToPermission passes directory", () => {
  beforeEach(() => {
    replyCalls.length = 0
    sessionRevertResult = {}
  })

  test("passes directory from child store when permission is found", async () => {
    const permission: PermissionRequest = {
      id: "perm-1",
      sessionID: "session-a",
      permission: "bash",
      patterns: [],
      metadata: {},
      always: [],
    }

    const store = createStore({ "session-a": [permission] })
    const childStores = createChildStores([["/test/project", store]])

    const { setActionRefs, respondToPermission } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/test/project")

    await respondToPermission("session-a", "perm-1", "once")

    expect(replyCalls.length).toBe(1)
    expect(replyCalls[0].params.requestID).toBe("perm-1")
    expect(replyCalls[0].params.reply).toBe("once")
    expect(replyCalls[0].params.directory).toBe("/test/project")
  })

  test("passes directory from session mapping when permission not in store", async () => {
    const childStores = createChildStores([])

    const { setActionRefs, respondToPermission } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/test/project")

    await respondToPermission("session-b", "perm-2", "always")

    expect(replyCalls.length).toBe(1)
    expect(replyCalls[0].params.requestID).toBe("perm-2")
    expect(replyCalls[0].params.reply).toBe("always")
    expect(replyCalls[0].params.directory).toBe("/other/project")
  })

  test("passes directory from current directory as last resort", async () => {
    const childStores = createChildStores([])

    const { setActionRefs, respondToPermission } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/fallback/dir")

    await respondToPermission("unknown-session", "perm-3", "reject")

    expect(replyCalls.length).toBe(1)
    expect(replyCalls[0].params.requestID).toBe("perm-3")
    expect(replyCalls[0].params.reply).toBe("reject")
    expect(replyCalls[0].params.directory).toBe("/fallback/dir")
  })
})

describe("revertToMessage passes session directory", () => {
  beforeEach(() => {
    replyCalls.length = 0
    sessionRevertResult = {}
    Object.assign(inputState, {
      pendingInputText: "previous draft",
      pendingInputMode: "normal" as const,
      attachedFiles: [],
    })
  })

  test("routes revert through the session directory instead of the current directory", async () => {
    const session = { id: "session-a", time: { created: 1 } } as Session
    const targetMessage = { id: "msg_2", sessionID: "session-a", role: "user", time: { created: 2 } } as Message
    const targetPart = { id: "prt_2", messageID: "msg_2", type: "text", text: "edit this" } as Part
    const sessionStore = createStore({}, {
      session: [session],
      message: { "session-a": [targetMessage] },
      part: { "msg_2": [targetPart] },
    })
    const currentStore = createStore({})
    const childStores = createChildStores([
      ["/test/project", sessionStore],
      ["/current/project", currentStore],
    ])
    sessionRevertResult = { data: { id: "session-a", time: { created: 1, updated: 2 }, revert: { messageID: "msg_2" } } }

    const { setActionRefs, revertToMessage } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/current/project")

    await revertToMessage("session-a", "msg_2")

    expect(replyCalls.find((call) => call.method === "session.revert")?.params.directory).toBe("/test/project")
    expect((sessionStore.getState().session[0] as Session & { revert?: { messageID?: string } }).revert?.messageID).toBe("msg_2")
    expect(currentStore.getState().session).toHaveLength(0)
    expect(inputState.pendingInputText).toBe("edit this")
  })

  test("rolls back optimistic revert when the SDK returns an error", async () => {
    const session = { id: "session-a", time: { created: 1 } } as Session
    const targetMessage = { id: "msg_2", sessionID: "session-a", role: "user", time: { created: 2 } } as Message
    const targetPart = { id: "prt_2", messageID: "msg_2", type: "text", text: "edit this" } as Part
    const sessionStore = createStore({}, {
      session: [session],
      message: { "session-a": [targetMessage] },
      part: { "msg_2": [targetPart] },
    })
    const childStores = createChildStores([["/test/project", sessionStore]])
    sessionRevertResult = { error: { message: "rejected" }, response: { status: 500 } }

    const { setActionRefs, revertToMessage } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/test/project")

    let thrown: unknown
    try {
      await revertToMessage("session-a", "msg_2")
    } catch (error) {
      thrown = error
    }

    expect(thrown).toBeInstanceOf(Error)
    expect((thrown as Error).message).toContain("session.revert failed (500)")
    expect((sessionStore.getState().session[0] as Session & { revert?: { messageID?: string } }).revert).toBe(undefined)
    expect(inputState.pendingInputText).toBe("previous draft")
  })
})

describe("dismissPermission passes directory", () => {
  beforeEach(() => {
    replyCalls.length = 0
  })

  test("passes directory and reply=reject", async () => {
    const permission: PermissionRequest = {
      id: "perm-10",
      sessionID: "session-a",
      permission: "edit",
      patterns: [],
      metadata: {},
      always: [],
    }

    const store = createStore({ "session-a": [permission] })
    const childStores = createChildStores([["/test/project", store]])

    const { setActionRefs, dismissPermission } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/test/project")

    await dismissPermission("session-a", "perm-10")

    expect(replyCalls.length).toBe(1)
    expect(replyCalls[0].params.requestID).toBe("perm-10")
    expect(replyCalls[0].params.reply).toBe("reject")
    expect(replyCalls[0].params.directory).toBe("/test/project")
  })
})

describe("respondToQuestion passes directory", () => {
  beforeEach(() => {
    replyCalls.length = 0
  })

  test("passes directory to question.reply", async () => {
    const childStores = createChildStores([])

    const { setActionRefs, respondToQuestion } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/test/project")

    await respondToQuestion("session-a", "q-1", [["answer1"]])

    expect(replyCalls.length).toBe(1)
    expect(replyCalls[0].params.requestID).toBe("q-1")
    expect(replyCalls[0].params.directory).toBe("/test/project")
  })
})

describe("rejectQuestion passes directory", () => {
  beforeEach(() => {
    replyCalls.length = 0
  })

  test("passes directory to question.reject", async () => {
    const childStores = createChildStores([])

    const { setActionRefs, rejectQuestion } = await import("./session-actions")
    setActionRefs(mockSdk as unknown as OpencodeClient, childStores, () => "/test/project")

    await rejectQuestion("session-a", "q-2")

    expect(replyCalls.length).toBe(1)
    expect(replyCalls[0].params.requestID).toBe("q-2")
    expect(replyCalls[0].params.directory).toBe("/test/project")
  })
})