# External Packages
import os
from pathlib import Path

import pytest
from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles
from fastapi.testclient import TestClient

# Internal Packages
from khoj.configure import configure_middleware, configure_routes, configure_search_types
from khoj.database.models import (
    GithubConfig,
    GithubRepoConfig,
    KhojApiUser,
    KhojUser,
    LocalMarkdownConfig,
    LocalOrgConfig,
    LocalPlaintextConfig,
)
from khoj.processor.content.org_mode.org_to_entries import OrgToEntries
from khoj.processor.content.plaintext.plaintext_to_entries import PlaintextToEntries
from khoj.processor.embeddings import CrossEncoderModel, EmbeddingsModel
from khoj.routers.indexer import configure_content
from khoj.search_type import image_search, text_search
from khoj.utils import fs_syncer, state
from khoj.utils.config import SearchModels
from khoj.utils.constants import web_directory
from khoj.utils.helpers import resolve_absolute_path
from khoj.utils.rawconfig import ContentConfig, ImageContentConfig, ImageSearchConfig, SearchConfig
from tests.helpers import (
    ChatModelOptionsFactory,
    OfflineChatProcessorConversationConfigFactory,
    OpenAIProcessorConversationConfigFactory,
    SubscriptionFactory,
    UserConversationProcessorConfigFactory,
    UserFactory,
)


@pytest.fixture(autouse=True)
def enable_db_access_for_all_tests(db):
    pass


@pytest.fixture(scope="session")
def search_config() -> SearchConfig:
    state.embeddings_model = dict()
    state.embeddings_model["default"] = EmbeddingsModel()
    state.cross_encoder_model = dict()
    state.cross_encoder_model["default"] = CrossEncoderModel()

    model_dir = resolve_absolute_path("~/.khoj/search")
    model_dir.mkdir(parents=True, exist_ok=True)
    search_config = SearchConfig()

    search_config.image = ImageSearchConfig(
        encoder="sentence-transformers/clip-ViT-B-32",
        model_directory=model_dir / "image/",
        encoder_type=None,
    )

    return search_config


@pytest.mark.django_db
@pytest.fixture
def default_user():
    user = UserFactory()
    SubscriptionFactory(user=user)
    return user


@pytest.mark.django_db
@pytest.fixture
def default_user2():
    if KhojUser.objects.filter(username="default").exists():
        return KhojUser.objects.get(username="default")

    user = KhojUser.objects.create(
        username="default",
        email="default@example.com",
        password="default",
    )
    SubscriptionFactory(user=user)
    return user


@pytest.mark.django_db
@pytest.fixture
def default_user3():
    """
    This user should not have any data associated with it
    """
    if KhojUser.objects.filter(username="default3").exists():
        return KhojUser.objects.get(username="default3")

    user = KhojUser.objects.create(
        username="default3",
        email="default3@example.com",
        password="default3",
    )
    SubscriptionFactory(user=user)
    return user


@pytest.mark.django_db
@pytest.fixture
def default_user4():
    """
    This user should not have a valid subscription
    """
    if KhojUser.objects.filter(username="default4").exists():
        return KhojUser.objects.get(username="default4")

    user = KhojUser.objects.create(
        username="default4",
        email="default4@example.com",
        password="default4",
    )
    SubscriptionFactory(user=user, renewal_date=None)
    return user


@pytest.mark.django_db
@pytest.fixture
def api_user(default_user):
    if KhojApiUser.objects.filter(user=default_user).exists():
        return KhojApiUser.objects.get(user=default_user)

    return KhojApiUser.objects.create(
        user=default_user,
        name="api-key",
        token="kk-secret",
    )


@pytest.mark.django_db
@pytest.fixture
def api_user2(default_user2):
    if KhojApiUser.objects.filter(user=default_user2).exists():
        return KhojApiUser.objects.get(user=default_user2)

    return KhojApiUser.objects.create(
        user=default_user2,
        name="api-key",
        token="kk-diff-secret",
    )


@pytest.mark.django_db
@pytest.fixture
def api_user3(default_user3):
    if KhojApiUser.objects.filter(user=default_user3).exists():
        return KhojApiUser.objects.get(user=default_user3)

    return KhojApiUser.objects.create(
        user=default_user3,
        name="api-key",
        token="kk-diff-secret-3",
    )


@pytest.mark.django_db
@pytest.fixture
def api_user4(default_user4):
    if KhojApiUser.objects.filter(user=default_user4).exists():
        return KhojApiUser.objects.get(user=default_user4)

    return KhojApiUser.objects.create(
        user=default_user4,
        name="api-key",
        token="kk-diff-secret-4",
    )


@pytest.fixture(scope="session")
def search_models(search_config: SearchConfig):
    search_models = SearchModels()
    search_models.image_search = image_search.initialize_model(search_config.image)

    return search_models


@pytest.fixture
def anyio_backend():
    return "asyncio"


@pytest.mark.django_db
@pytest.fixture(scope="function")
def content_config(tmp_path_factory, search_models: SearchModels, default_user: KhojUser):
    content_dir = tmp_path_factory.mktemp("content")

    # Generate Image Embeddings from Test Images
    content_config = ContentConfig()
    content_config.image = ImageContentConfig(
        input_filter=None,
        input_directories=["tests/data/images"],
        embeddings_file=content_dir.joinpath("image_embeddings.pt"),
        batch_size=1,
        use_xmp_metadata=False,
    )

    image_search.setup(content_config.image, search_models.image_search.image_encoder, regenerate=False)

    LocalOrgConfig.objects.create(
        input_files=None,
        input_filter=["tests/data/org/*.org"],
        index_heading_entries=False,
        user=default_user,
    )

    text_search.setup(OrgToEntries, get_sample_data("org"), regenerate=False, user=default_user)

    if os.getenv("GITHUB_PAT_TOKEN"):
        GithubConfig.objects.create(
            pat_token=os.getenv("GITHUB_PAT_TOKEN"),
            user=default_user,
        )

        GithubRepoConfig.objects.create(
            owner="khoj-ai",
            name="lantern",
            branch="master",
            github_config=GithubConfig.objects.get(user=default_user),
        )

    LocalPlaintextConfig.objects.create(
        input_files=None,
        input_filter=["tests/data/plaintext/*.txt", "tests/data/plaintext/*.md", "tests/data/plaintext/*.html"],
        user=default_user,
    )

    return content_config


@pytest.fixture(scope="session")
def md_content_config():
    markdown_config = LocalMarkdownConfig.objects.create(
        input_files=None,
        input_filter=["tests/data/markdown/*.markdown"],
    )

    return markdown_config


@pytest.fixture(scope="function")
def chat_client(search_config: SearchConfig, default_user2: KhojUser):
    # Initialize app state
    state.config.search_type = search_config
    state.SearchType = configure_search_types()

    LocalMarkdownConfig.objects.create(
        input_files=None,
        input_filter=["tests/data/markdown/*.markdown"],
        user=default_user2,
    )

    # Index Markdown Content for Search
    all_files = fs_syncer.collect_files(user=default_user2)
    state.content_index, _ = configure_content(
        state.content_index, state.config.content_type, all_files, state.search_models, user=default_user2
    )

    # Initialize Processor from Config
    if os.getenv("OPENAI_API_KEY"):
        chat_model = ChatModelOptionsFactory(chat_model="gpt-3.5-turbo", model_type="openai")
        OpenAIProcessorConversationConfigFactory()
        UserConversationProcessorConfigFactory(user=default_user2, setting=chat_model)

    state.anonymous_mode = True

    app = FastAPI()

    configure_routes(app)
    configure_middleware(app)
    app.mount("/static", StaticFiles(directory=web_directory), name="static")
    return TestClient(app)


@pytest.fixture(scope="function")
def chat_client_no_background(search_config: SearchConfig, default_user2: KhojUser):
    # Initialize app state
    state.config.search_type = search_config
    state.SearchType = configure_search_types()

    # Initialize Processor from Config
    if os.getenv("OPENAI_API_KEY"):
        chat_model = ChatModelOptionsFactory(chat_model="gpt-3.5-turbo", model_type="openai")
        OpenAIProcessorConversationConfigFactory()
        UserConversationProcessorConfigFactory(user=default_user2, setting=chat_model)

    state.anonymous_mode = True

    app = FastAPI()

    configure_routes(app)
    configure_middleware(app)
    app.mount("/static", StaticFiles(directory=web_directory), name="static")
    return TestClient(app)


@pytest.fixture(scope="function")
def fastapi_app():
    app = FastAPI()
    configure_routes(app)
    configure_middleware(app)
    app.mount("/static", StaticFiles(directory=web_directory), name="static")
    return app


@pytest.fixture(scope="function")
def client(
    content_config: ContentConfig,
    search_config: SearchConfig,
    api_user: KhojApiUser,
):
    state.config.content_type = content_config
    state.config.search_type = search_config
    state.SearchType = configure_search_types()
    state.embeddings_model = dict()
    state.embeddings_model["default"] = EmbeddingsModel()
    state.cross_encoder_model = dict()
    state.cross_encoder_model["default"] = CrossEncoderModel()

    # These lines help us Mock the Search models for these search types
    state.search_models.image_search = image_search.initialize_model(search_config.image)
    text_search.setup(
        OrgToEntries,
        get_sample_data("org"),
        regenerate=False,
        user=api_user.user,
    )
    state.content_index.image = image_search.setup(
        content_config.image, state.search_models.image_search, regenerate=False
    )
    text_search.setup(
        PlaintextToEntries,
        get_sample_data("plaintext"),
        regenerate=False,
        user=api_user.user,
    )

    state.anonymous_mode = False

    app = FastAPI()
    configure_routes(app)
    configure_middleware(app)
    app.mount("/static", StaticFiles(directory=web_directory), name="static")
    return TestClient(app)


@pytest.fixture(scope="function")
def client_offline_chat(search_config: SearchConfig, default_user2: KhojUser):
    # Initialize app state
    state.config.search_type = search_config
    state.SearchType = configure_search_types()

    LocalMarkdownConfig.objects.create(
        input_files=None,
        input_filter=["tests/data/markdown/*.markdown"],
        user=default_user2,
    )

    all_files = fs_syncer.collect_files(user=default_user2)
    configure_content(
        state.content_index, state.config.content_type, all_files, state.search_models, user=default_user2
    )

    # Initialize Processor from Config
    OfflineChatProcessorConversationConfigFactory(enabled=True)
    UserConversationProcessorConfigFactory(user=default_user2)

    state.anonymous_mode = True

    app = FastAPI()

    configure_routes(app)
    configure_middleware(app)
    app.mount("/static", StaticFiles(directory=web_directory), name="static")
    return TestClient(app)


@pytest.fixture(scope="function")
def new_org_file(default_user: KhojUser, content_config: ContentConfig):
    # Setup
    org_config = LocalOrgConfig.objects.filter(user=default_user).first()
    input_filters = org_config.input_filter
    new_org_file = Path(input_filters[0]).parent / "new_file.org"
    new_org_file.touch()

    yield new_org_file

    # Cleanup
    if new_org_file.exists():
        new_org_file.unlink()


@pytest.fixture(scope="function")
def org_config_with_only_new_file(new_org_file: Path, default_user: KhojUser):
    LocalOrgConfig.objects.update(input_files=[str(new_org_file)], input_filter=None)
    return LocalOrgConfig.objects.filter(user=default_user).first()


@pytest.fixture(scope="function")
def sample_org_data():
    return get_sample_data("org")


def get_sample_data(type):
    sample_data = {
        "org": {
            "elisp.org": """
* Emacs Khoj
  /An Emacs interface for [[https://github.com/khoj-ai/khoj][khoj]]/

** Requirements
   - Install and Run [[https://github.com/khoj-ai/khoj][khoj]]

** Installation
*** Direct
     - Put ~khoj.el~ in your Emacs load path. For e.g ~/.emacs.d/lisp
     - Load via ~use-package~ in your ~/.emacs.d/init.el or .emacs file by adding below snippet
       #+begin_src elisp
         ;; Khoj Package
         (use-package khoj
           :load-path "~/.emacs.d/lisp/khoj.el"
           :bind ("C-c s" . 'khoj))
       #+end_src

*** Using [[https://github.com/quelpa/quelpa#installation][Quelpa]]
     - Ensure [[https://github.com/quelpa/quelpa#installation][Quelpa]], [[https://github.com/quelpa/quelpa-use-package#installation][quelpa-use-package]] are installed
     - Add below snippet to your ~/.emacs.d/init.el or .emacs config file and execute it.
       #+begin_src elisp
         ;; Khoj Package
         (use-package khoj
           :quelpa (khoj :fetcher url :url "https://raw.githubusercontent.com/khoj-ai/khoj/master/interface/emacs/khoj.el")
           :bind ("C-c s" . 'khoj))
       #+end_src

** Usage
   1. Call ~khoj~ using keybinding ~C-c s~ or ~M-x khoj~
   2. Enter Query in Natural Language
      e.g "What is the meaning of life?" "What are my life goals?"
   3. Wait for results
      *Note: It takes about 15s on a Mac M1 and a ~100K lines corpus of org-mode files*
   4. (Optional) Narrow down results further
      Include/Exclude specific words from results by adding to query
      e.g "What is the meaning of life? -god +none"

""",
            "readme.org": """
* Khoj
  /Allow natural language search on user content like notes, images using transformer based models/

  All data is processed locally. User can interface with khoj app via [[./interface/emacs/khoj.el][Emacs]], API or Commandline

** Dependencies
   - Python3
   - [[https://docs.conda.io/en/latest/miniconda.html#latest-miniconda-installer-links][Miniconda]]

** Install
   #+begin_src shell
   git clone https://github.com/khoj-ai/khoj && cd khoj
   conda env create -f environment.yml
   conda activate khoj
   #+end_src""",
        },
        "markdown": {
            "readme.markdown": """
# Khoj
Allow natural language search on user content like notes, images using transformer based models

All data is processed locally. User can interface with khoj app via [Emacs](./interface/emacs/khoj.el), API or Commandline

## Dependencies
- Python3
- [Miniconda](https://docs.conda.io/en/latest/miniconda.html#latest-miniconda-installer-links)

## Install
```shell
git clone
conda env create -f environment.yml
conda activate khoj
```
"""
        },
        "plaintext": {
            "readme.txt": """
Khoj
Allow natural language search on user content like notes, images using transformer based models

All data is processed locally. User can interface with khoj app via Emacs, API or Commandline

Dependencies
- Python3
- Miniconda

Install
git clone
conda env create -f environment.yml
conda activate khoj
"""
        },
    }

    return sample_data[type]