from __future__ import annotations

from typing import Any


def build_buttons_template(
    title: str,
    text: str,
    actions: list[dict],
    thumbnail_url: str | None = None,
    alt_text: str = "Buttons Template",
) -> dict:
    template: dict = {
        "type": "buttons",
        "title": title[:40] if title else None,
        "text": text[:160],
        "actions": actions[:4],
    }
    if thumbnail_url:
        template["thumbnailImageUrl"] = thumbnail_url

    return {
        "type": "template",
        "altText": alt_text[:400],
        "template": template,
    }


def build_confirm_template(
    text: str,
    actions: list[dict],
    alt_text: str = "Confirm",
) -> dict:
    return {
        "type": "template",
        "altText": alt_text[:400],
        "template": {
            "type": "confirm",
            "text": text[:240],
            "actions": actions[:2],
        },
    }


def build_carousel_template(columns: list[dict], alt_text: str = "Carousel") -> dict:
    return {
        "type": "template",
        "altText": alt_text[:400],
        "template": {
            "type": "carousel",
            "columns": columns[:10],
        },
    }


def build_image_carousel_template(columns: list[dict], alt_text: str = "Image Carousel") -> dict:
    return {
        "type": "template",
        "altText": alt_text[:400],
        "template": {
            "type": "image_carousel",
            "columns": columns[:10],
        },
    }


def build_image_carousel_column(
    image_url: str,
    action: dict | None = None,
) -> dict:
    col: dict = {
        "imageUrl": image_url,
        "imageSize": "cover",
    }
    if action:
        col["action"] = action
    return col


def build_product_carousel(products: list[dict], alt_text: str = "Product Carousel") -> dict:
    columns = []
    for product in products[:10]:
        column = {
            "thumbnailImageUrl": product.get("image_url", ""),
            "title": product.get("title", "")[:40],
            "text": product.get("description", "")[:120],
            "actions": [
                {
                    "type": "uri",
                    "label": product.get("action_label", "View")[:20],
                    "uri": product.get("action_url", ""),
                }
            ],
        }
        if product.get("price"):
            column["defaultAction"] = {
                "type": "uri",
                "label": "View",
                "uri": product.get("action_url", ""),
            }
        columns.append(column)

    return build_carousel_template(columns, alt_text)


def build_link_menu(
    title: str,
    links: list[dict],
    alt_text: str = "Link Menu",
) -> dict:
    actions = []
    for link in links[:4]:
        actions.append(
            {
                "type": "uri",
                "label": link.get("label", "")[:20],
                "uri": link.get("uri", ""),
            }
        )

    return (
        {
            "type": "template",
            "altText": alt_text[:400],
            "template": {
                "type": "buttons",
                "title": title[:40],
                "text": "",
                "actions": actions,
            },
        }
        if actions
        else {}
    )


def build_yes_no_confirm(
    question: str,
    yes_label: str = "Yes",
    no_label: str = "No",
    alt_text: str = "Confirm",
) -> dict:
    return build_confirm_template(
        text=question,
        actions=[
            {"type": "message", "label": yes_label[:20], "text": "yes"},
            {"type": "message", "label": no_label[:20], "text": "no"},
        ],
        alt_text=alt_text,
    )


def build_template_message_from_payload(payload: dict[str, Any]) -> dict | None:
    tmpl_type = payload.get("type", "")
    if tmpl_type == "buttons":
        return build_buttons_template(
            title=payload.get("title", ""),
            text=payload.get("text", ""),
            actions=payload.get("actions", []),
            thumbnail_url=payload.get("thumbnail_url"),
            alt_text=payload.get("alt_text", "Buttons Template"),
        )
    if tmpl_type == "confirm":
        return build_confirm_template(
            text=payload.get("text", ""),
            actions=payload.get("actions", []),
            alt_text=payload.get("alt_text", "Confirm"),
        )
    if tmpl_type == "carousel":
        return build_carousel_template(
            columns=payload.get("columns", []),
            alt_text=payload.get("alt_text", "Carousel"),
        )
    if tmpl_type == "image_carousel":
        return build_image_carousel_template(
            columns=payload.get("columns", []),
            alt_text=payload.get("alt_text", "Image Carousel"),
        )
    if tmpl_type == "product_carousel":
        return build_product_carousel(
            products=payload.get("products", []),
            alt_text=payload.get("alt_text", "Product Carousel"),
        )
    if tmpl_type == "link_menu":
        return build_link_menu(
            title=payload.get("title", ""),
            links=payload.get("links", []),
            alt_text=payload.get("alt_text", "Link Menu"),
        )
    if tmpl_type == "yes_no":
        return build_yes_no_confirm(
            question=payload.get("question", ""),
            yes_label=payload.get("yes_label", "Yes"),
            no_label=payload.get("no_label", "No"),
            alt_text=payload.get("alt_text", "Confirm"),
        )
    return None


def build_datetime_picker_action(
    mode: str = "datetime",
    label: str = "Select",
    data: str = "",
    initial: str | None = None,
    max_value: str | None = None,
    min_value: str | None = None,
) -> dict:
    if mode not in ("date", "time", "datetime"):
        mode = "datetime"

    action: dict = {
        "type": "datetimepicker",
        "label": label[:20],
        "data": data[:300],
        "mode": mode,
    }
    if initial:
        action["initial"] = initial
    if max_value:
        action["max"] = max_value
    if min_value:
        action["min"] = min_value
    return action