Helpers

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from langflow.custom.custom_component.component import Component
from langflow.inputs.inputs import StrInput
from langflow.schema.data import Data
from langflow.schema.dataframe import DataFrame
from langflow.template.field.base import Output


class CreateListComponent(Component):
    display_name = "Create List"
    description = "Creates a list of texts."
    icon = "list"
    name = "CreateList"
    legacy = True

    inputs = [
        StrInput(
            name="texts",
            display_name="Texts",
            info="Enter one or more texts.",
            is_list=True,
        ),
    ]

    outputs = [
        Output(display_name="Data List", name="list", method="create_list"),
        Output(display_name="DataFrame", name="dataframe", method="as_dataframe"),
    ]

    def create_list(self) -> list[Data]:
        data = [Data(text=text) for text in self.texts]
        self.status = data
        return data

    def as_dataframe(self) -> DataFrame:
        """Convert the list of Data objects into a DataFrame.

        Returns:
            DataFrame: A DataFrame containing the list data.
        """
        return DataFrame(self.create_list())

from datetime import datetime
from zoneinfo import ZoneInfo, available_timezones

from loguru import logger

from langflow.custom.custom_component.component import Component
from langflow.io import DropdownInput, Output
from langflow.schema.message import Message


class CurrentDateComponent(Component):
    display_name = "Current Date"
    description = "Returns the current date and time in the selected timezone."
    icon = "clock"
    name = "CurrentDate"

    inputs = [
        DropdownInput(
            name="timezone",
            display_name="Timezone",
            options=list(available_timezones()),
            value="UTC",
            info="Select the timezone for the current date and time.",
            tool_mode=True,
        ),
    ]
    outputs = [
        Output(display_name="Current Date", name="current_date", method="get_current_date"),
    ]

    def get_current_date(self) -> Message:
        try:
            tz = ZoneInfo(self.timezone)
            current_date = datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S %Z")
            result = f"Current date and time in {self.timezone}: {current_date}"
            self.status = result
            return Message(text=result)
        except Exception as e:  # noqa: BLE001
            logger.opt(exception=True).debug("Error getting current date")
            error_message = f"Error: {e}"
            self.status = error_message
            return Message(text=error_message)

# from langflow.field_typing import Data
from langflow.custom.custom_component.component import Component
from langflow.io import MessageTextInput, Output
from langflow.schema.data import Data


class CustomComponent(Component):
    display_name = "Custom Component"
    description = "Use as a template to create your own component."
    documentation: str = "https://docs.langflow.org/components-custom-components"
    icon = "code"
    name = "CustomComponent"

    inputs = [
        MessageTextInput(
            name="input_value",
            display_name="Input Value",
            info="This is a custom component Input",
            value="Hello, World!",
            tool_mode=True,
        ),
    ]

    outputs = [
        Output(display_name="Output", name="output", method="build_output"),
    ]

    def build_output(self) -> Data:
        data = Data(value=self.input_value)
        self.status = data
        return data

from langflow.base.agents.crewai.tasks import HierarchicalTask
from langflow.custom.custom_component.component import Component
from langflow.io import HandleInput, MultilineInput, Output


class HierarchicalTaskComponent(Component):
    display_name: str = "Hierarchical Task"
    description: str = "Each task must have a description, an expected output and an agent responsible for execution."
    icon = "CrewAI"
    inputs = [
        MultilineInput(
            name="task_description",
            display_name="Description",
            info="Descriptive text detailing task's purpose and execution.",
        ),
        MultilineInput(
            name="expected_output",
            display_name="Expected Output",
            info="Clear definition of expected task outcome.",
        ),
        HandleInput(
            name="tools",
            display_name="Tools",
            input_types=["Tool"],
            is_list=True,
            info="List of tools/resources limited for task execution. Uses the Agent tools by default.",
            required=False,
            advanced=True,
        ),
    ]

    outputs = [
        Output(display_name="Task", name="task_output", method="build_task"),
    ]

    def build_task(self) -> HierarchicalTask:
        task = HierarchicalTask(
            description=self.task_description,
            expected_output=self.expected_output,
            tools=self.tools or [],
        )
        self.status = task
        return task

import uuid
from typing import Any

from typing_extensions import override

from langflow.custom.custom_component.component import Component
from langflow.io import MessageTextInput, Output
from langflow.schema.dotdict import dotdict
from langflow.schema.message import Message


class IDGeneratorComponent(Component):
    display_name = "ID Generator"
    description = "Generates a unique ID."
    icon = "fingerprint"
    name = "IDGenerator"
    legacy = True

    inputs = [
        MessageTextInput(
            name="unique_id",
            display_name="Value",
            info="The generated unique ID.",
            refresh_button=True,
            tool_mode=True,
        ),
    ]

    outputs = [
        Output(display_name="ID", name="id", method="generate_id"),
    ]

    @override
    def update_build_config(self, build_config: dotdict, field_value: Any, field_name: str | None = None):
        if field_name == "unique_id":
            build_config[field_name]["value"] = str(uuid.uuid4())
        return build_config

    def generate_id(self) -> Message:
        unique_id = self.unique_id or str(uuid.uuid4())
        self.status = f"Generated ID: {unique_id}"
        return Message(text=unique_id)

from typing import Any, cast

from langflow.custom.custom_component.component import Component
from langflow.helpers.data import data_to_text
from langflow.inputs.inputs import DropdownInput, HandleInput, IntInput, MessageTextInput, MultilineInput, TabInput
from langflow.memory import aget_messages, astore_message
from langflow.schema.data import Data
from langflow.schema.dataframe import DataFrame
from langflow.schema.dotdict import dotdict
from langflow.schema.message import Message
from langflow.template.field.base import Output
from langflow.utils.component_utils import set_current_fields, set_field_display
from langflow.utils.constants import MESSAGE_SENDER_AI, MESSAGE_SENDER_NAME_AI, MESSAGE_SENDER_USER


class MemoryComponent(Component):
    display_name = "Message History"
    description = "Stores or retrieves stored chat messages from Langflow tables or an external memory."
    icon = "message-square-more"
    name = "Memory"
    default_keys = ["mode", "memory"]
    mode_config = {
        "Store": ["message", "memory", "sender", "sender_name", "session_id"],
        "Retrieve": ["n_messages", "order", "template", "memory"],
    }

    inputs = [
        TabInput(
            name="mode",
            display_name="Mode",
            options=["Retrieve", "Store"],
            value="Retrieve",
            info="Operation mode: Store messages or Retrieve messages.",
            real_time_refresh=True,
        ),
        MessageTextInput(
            name="message",
            display_name="Message",
            info="The chat message to be stored.",
            tool_mode=True,
            dynamic=True,
            show=False,
        ),
        HandleInput(
            name="memory",
            display_name="External Memory",
            input_types=["Memory"],
            info="Retrieve messages from an external memory. If empty, it will use the Langflow tables.",
            advanced=True,
        ),
        DropdownInput(
            name="sender_type",
            display_name="Sender Type",
            options=[MESSAGE_SENDER_AI, MESSAGE_SENDER_USER, "Machine and User"],
            value="Machine and User",
            info="Filter by sender type.",
            advanced=True,
        ),
        MessageTextInput(
            name="sender",
            display_name="Sender",
            info="The sender of the message. Might be Machine or User. "
            "If empty, the current sender parameter will be used.",
            advanced=True,
        ),
        MessageTextInput(
            name="sender_name",
            display_name="Sender Name",
            info="Filter by sender name.",
            advanced=True,
            show=False,
        ),
        IntInput(
            name="n_messages",
            display_name="Number of Messages",
            value=100,
            info="Number of messages to retrieve.",
            advanced=True,
            show=False,
        ),
        MessageTextInput(
            name="session_id",
            display_name="Session ID",
            info="The session ID of the chat. If empty, the current session ID parameter will be used.",
            value="",
            advanced=True,
        ),
        DropdownInput(
            name="order",
            display_name="Order",
            options=["Ascending", "Descending"],
            value="Ascending",
            info="Order of the messages.",
            advanced=True,
            tool_mode=True,
            required=True,
        ),
        MultilineInput(
            name="template",
            display_name="Template",
            info="The template to use for formatting the data. "
            "It can contain the keys {text}, {sender} or any other key in the message data.",
            value="{sender_name}: {text}",
            advanced=True,
            show=False,
        ),
    ]

    outputs = [
        Output(display_name="Message", name="messages_text", method="retrieve_messages_as_text", dynamic=True),
        Output(display_name="Dataframe", name="dataframe", method="retrieve_messages_dataframe", dynamic=True),
    ]

    def update_outputs(self, frontend_node: dict, field_name: str, field_value: Any) -> dict:
        """Dynamically show only the relevant output based on the selected output type."""
        if field_name == "mode":
            # Start with empty outputs
            frontend_node["outputs"] = []
            if field_value == "Store":
                frontend_node["outputs"] = [
                    Output(
                        display_name="Stored Messages",
                        name="stored_messages",
                        method="store_message",
                        hidden=True,
                        dynamic=True,
                    )
                ]
            if field_value == "Retrieve":
                frontend_node["outputs"] = [
                    Output(
                        display_name="Messages", name="messages_text", method="retrieve_messages_as_text", dynamic=True
                    ),
                    Output(
                        display_name="Dataframe", name="dataframe", method="retrieve_messages_dataframe", dynamic=True
                    ),
                ]
        return frontend_node

    async def store_message(self) -> Message:
        message = Message(text=self.message) if isinstance(self.message, str) else self.message

        message.session_id = self.session_id or message.session_id
        message.sender = self.sender or message.sender or MESSAGE_SENDER_AI
        message.sender_name = self.sender_name or message.sender_name or MESSAGE_SENDER_NAME_AI

        stored_messages: list[Message] = []

        if self.memory:
            self.memory.session_id = message.session_id
            lc_message = message.to_lc_message()
            await self.memory.aadd_messages([lc_message])

            stored_messages = await self.memory.aget_messages() or []

            stored_messages = [Message.from_lc_message(m) for m in stored_messages] if stored_messages else []

            if message.sender:
                stored_messages = [m for m in stored_messages if m.sender == message.sender]
        else:
            await astore_message(message, flow_id=self.graph.flow_id)
            stored_messages = (
                await aget_messages(
                    session_id=message.session_id, sender_name=message.sender_name, sender=message.sender
                )
                or []
            )

        if not stored_messages:
            msg = "No messages were stored. Please ensure that the session ID and sender are properly set."
            raise ValueError(msg)

        stored_message = stored_messages[0]
        self.status = stored_message
        return stored_message

    async def retrieve_messages(self) -> Data:
        sender_type = self.sender_type
        sender_name = self.sender_name
        session_id = self.session_id
        n_messages = self.n_messages
        order = "DESC" if self.order == "Descending" else "ASC"

        if sender_type == "Machine and User":
            sender_type = None

        if self.memory and not hasattr(self.memory, "aget_messages"):
            memory_name = type(self.memory).__name__
            err_msg = f"External Memory object ({memory_name}) must have 'aget_messages' method."
            raise AttributeError(err_msg)
        # Check if n_messages is None or 0
        if n_messages == 0:
            stored = []
        elif self.memory:
            # override session_id
            self.memory.session_id = session_id

            stored = await self.memory.aget_messages()
            # langchain memories are supposed to return messages in ascending order
            if order == "DESC":
                stored = stored[::-1]
            if n_messages:
                stored = stored[:n_messages]
            stored = [Message.from_lc_message(m) for m in stored]
            if sender_type:
                expected_type = MESSAGE_SENDER_AI if sender_type == MESSAGE_SENDER_AI else MESSAGE_SENDER_USER
                stored = [m for m in stored if m.type == expected_type]
        else:
            stored = await aget_messages(
                sender=sender_type,
                sender_name=sender_name,
                session_id=session_id,
                limit=n_messages,
                order=order,
            )
        self.status = stored
        return cast(Data, stored)

    async def retrieve_messages_as_text(self) -> Message:
        stored_text = data_to_text(self.template, await self.retrieve_messages())
        self.status = stored_text
        return Message(text=stored_text)

    async def retrieve_messages_dataframe(self) -> DataFrame:
        """Convert the retrieved messages into a DataFrame.

        Returns:
            DataFrame: A DataFrame containing the message data.
        """
        messages = await self.retrieve_messages()
        return DataFrame(messages)

    def update_build_config(
        self,
        build_config: dotdict,
        field_value: Any,  # noqa: ARG002
        field_name: str | None = None,  # noqa: ARG002
    ) -> dotdict:
        return set_current_fields(
            build_config=build_config,
            action_fields=self.mode_config,
            selected_action=build_config["mode"]["value"],
            default_fields=self.default_keys,
            func=set_field_display,
        )

from langflow.base.agents.crewai.tasks import SequentialTask
from langflow.custom.custom_component.component import Component
from langflow.io import BoolInput, HandleInput, MultilineInput, Output


class SequentialTaskComponent(Component):
    display_name: str = "Sequential Task"
    description: str = "Each task must have a description, an expected output and an agent responsible for execution."
    icon = "CrewAI"
    inputs = [
        MultilineInput(
            name="task_description",
            display_name="Description",
            info="Descriptive text detailing task's purpose and execution.",
        ),
        MultilineInput(
            name="expected_output",
            display_name="Expected Output",
            info="Clear definition of expected task outcome.",
        ),
        HandleInput(
            name="tools",
            display_name="Tools",
            input_types=["Tool"],
            is_list=True,
            info="List of tools/resources limited for task execution. Uses the Agent tools by default.",
            required=False,
            advanced=True,
        ),
        HandleInput(
            name="agent",
            display_name="Agent",
            input_types=["Agent"],
            info="CrewAI Agent that will perform the task",
            required=True,
        ),
        HandleInput(
            name="task",
            display_name="Task",
            input_types=["SequentialTask"],
            info="CrewAI Task that will perform the task",
        ),
        BoolInput(
            name="async_execution",
            display_name="Async Execution",
            value=True,
            advanced=True,
            info="Boolean flag indicating asynchronous task execution.",
        ),
    ]

    outputs = [
        Output(display_name="Task", name="task_output", method="build_task"),
    ]

    def build_task(self) -> list[SequentialTask]:
        tasks: list[SequentialTask] = []
        task = SequentialTask(
            description=self.task_description,
            expected_output=self.expected_output,
            tools=self.agent.tools,
            async_execution=False,
            agent=self.agent,
        )
        tasks.append(task)
        self.status = task
        if self.task:
            if isinstance(self.task, list) and all(isinstance(task, SequentialTask) for task in self.task):
                tasks = self.task + tasks
            elif isinstance(self.task, SequentialTask):
                tasks = [self.task, *tasks]
        return tasks

from langflow.custom.custom_component.component import Component
from langflow.inputs.inputs import (
    HandleInput,
    MessageTextInput,
)
from langflow.memory import aget_messages, astore_message
from langflow.schema.message import Message
from langflow.template.field.base import Output
from langflow.utils.constants import MESSAGE_SENDER_AI, MESSAGE_SENDER_NAME_AI


class MessageStoreComponent(Component):
    display_name = "Message Store"
    description = "Stores a chat message or text into Langflow tables or an external memory."
    icon = "message-square-text"
    name = "StoreMessage"
    legacy = True

    inputs = [
        MessageTextInput(
            name="message", display_name="Message", info="The chat message to be stored.", required=True, tool_mode=True
        ),
        HandleInput(
            name="memory",
            display_name="External Memory",
            input_types=["Memory"],
            info="The external memory to store the message. If empty, it will use the Langflow tables.",
        ),
        MessageTextInput(
            name="sender",
            display_name="Sender",
            info="The sender of the message. Might be Machine or User. "
            "If empty, the current sender parameter will be used.",
            advanced=True,
        ),
        MessageTextInput(
            name="sender_name",
            display_name="Sender Name",
            info="The name of the sender. Might be AI or User. If empty, the current sender parameter will be used.",
            advanced=True,
        ),
        MessageTextInput(
            name="session_id",
            display_name="Session ID",
            info="The session ID of the chat. If empty, the current session ID parameter will be used.",
            value="",
            advanced=True,
        ),
    ]

    outputs = [
        Output(display_name="Stored Messages", name="stored_messages", method="store_message", hidden=True),
    ]

    async def store_message(self) -> Message:
        message = Message(text=self.message) if isinstance(self.message, str) else self.message

        message.session_id = self.session_id or message.session_id
        message.sender = self.sender or message.sender or MESSAGE_SENDER_AI
        message.sender_name = self.sender_name or message.sender_name or MESSAGE_SENDER_NAME_AI

        stored_messages: list[Message] = []

        if self.memory:
            self.memory.session_id = message.session_id
            lc_message = message.to_lc_message()
            await self.memory.aadd_messages([lc_message])

            stored_messages = await self.memory.aget_messages() or []

            stored_messages = [Message.from_lc_message(m) for m in stored_messages] if stored_messages else []

            if message.sender:
                stored_messages = [m for m in stored_messages if m.sender == message.sender]
        else:
            await astore_message(message, flow_id=self.graph.flow_id)
            stored_messages = (
                await aget_messages(
                    session_id=message.session_id, sender_name=message.sender_name, sender=message.sender
                )
                or []
            )

        if not stored_messages:
            msg = "No messages were stored. Please ensure that the session ID and sender are properly set."
            raise ValueError(msg)

        stored_message = stored_messages[0]
        self.status = stored_message
        return stored_message

404: Not Found