from pathlib import Path

from app.schema import DocumentProduct, CartOrderInfo, CartSessionItemOptions


def typeset_flat_list(item_key: str, item_list: list[str | int]) -> str:
    """Convert flat list to string in the following format:
    => key: ["a", "b", 10, 44]
    """
    flat_list = []
    for s in item_list:
        flat_list.append(f'"{s}"')

    item = f"  {item_key}: [{', '.join(flat_list)}]"

    return item


def convert_pydantic_product_to_text(doc: DocumentProduct) -> str:
    """Convert a Pydantic model object (Product) into a text document
    ready to be written to disk.
    """
    doc_dict = doc.model_dump()

    doc_dict_meta = doc_dict["meta"]

    # -- options
    options = []
    if doc.meta.options:
        options.append("options:")

        if doc_dict_meta["options"]["size"]:
            size = typeset_flat_list("size", doc_dict_meta["options"]["size"])
        else:
            size = "  size: "
        if doc_dict_meta["options"]["style"]:
            style = typeset_flat_list("style", doc_dict_meta["options"]["style"])
        else:
            style = "  style: "

        options.append(size)
        options.append(style)

    if len(options):
        options = "\n".join(options)

    # -- inventory
    inventory = ["inventory:"]
    for item in doc_dict_meta["inventory"]:
        unit = []

        if item["product_variation_id"]:
            unit.append(f"  - product_variation_id: \"{item['product_variation_id']}\"")
        else:
            unit.append("  - product_variation_id:")

        if item["size"]:
            unit.append(f"    size: \"{item['size']}\"")
        else:
            unit.append("    size:")

        if item["style"]:
            unit.append(f"    style: \"{item['style']}\"")
        else:
            unit.append("    style:")

        unit.append(f"    amount: {item['amount']}")

        unit = "\n".join(unit)
        inventory.append(unit)

    inventory = "\n".join(inventory)

    # -- assemble txt_meta
    txt_meta = (
        "---",
        f"type: \"{doc_dict_meta['type']}\"",
        f"title: \"{doc_dict_meta['title']}\"",
        f"template: \"{doc_dict_meta['template']}\"",
        f"code: \"{doc_dict_meta['code']}\"",
        f"product_id: \"{doc_dict_meta['product_id']}\"",
        f"price: {doc_dict_meta['price']}",
        f"weight: {doc_dict_meta['weight']}",
        f"customs_tariff_code: \"{doc_dict_meta['customs_tariff_code']}\"",
        f"origin_country_iso: \"{doc_dict_meta['origin_country_iso']}\"",
        f"category: \"{doc_dict_meta['category']}\"",
    )

    if len(options):
        txt_meta = txt_meta + (f"{options}",)

    txt_meta = txt_meta + (f"{inventory}",)
    # --

    txt_blocks = []
    for block in doc_dict["blocks"]:
        if block["type"] == "text":
            txt_blocks.append(block["value"])

        elif block["type"] == "image":
            caption = ""
            if block["caption"]:
                caption = f"caption: \"{block['caption']}\""

            url_p = Path(block["url"])
            url = f"{url_p.stem}{url_p.suffix}"

            block_img = (
                f"type: \"{block['type']}\"",
                f'url: "{url}"',
                f"{caption}",
            )

            block_img = "\n".join(block_img)
            txt_blocks.append(block_img)

    txt_meta = "\n".join(txt_meta)
    txt_blocks = "\n---\n".join(txt_blocks)
    txt_doc = "\n---\n".join((txt_meta, txt_blocks))
    txt_doc = f"{txt_doc}\n"

    return txt_doc


def format_yaml_multiline(text: str, indent: bool = False) -> str:
    """
    Manually indent multiline values for YAML key.
    """

    lines = text.splitlines()
    if indent:
        lines = [f"{line.rjust(len(line) +4)}" for line in lines]
        
    lines = "\n".join(lines)

    return lines


def typeset_order_content(
    items_table, currency: str, subtotal: int, shipping: int, total: int
) -> str:
    """Return a multiline string of the orders' content (list of product
    items, price, etc.). Useful for when sending out an email.
    """
    content_order_txt = []

    for i in items_table:
        item_txt = f"- {i.quantity}x {i.title}, {currency} {i.price}\n"
        content_order_txt.append(item_txt)

    subtotal_txt = f"\nSubtotal {currency} {subtotal}\n"
    shipping_txt = f"Shipping {currency} {shipping}\n"
    total_txt = f"Total {currency} {total}"

    content_order_txt.append(subtotal_txt)
    content_order_txt.append(shipping_txt)
    content_order_txt.append(total_txt)

    return "".join(content_order_txt)


def typeset_order_shipping_info(shipping_info):
    """Return a multiline string of the shipping info, useful for when
    sending out an email.
    """
    shipping_info_txt = []

    if shipping_info.first_name:
        shipping_info_txt.append(
            f"{shipping_info.first_name} {shipping_info.last_name}\n"
        )
    else:
        shipping_info_txt.append(f"{shipping_info.last_name}\n")

    address_full = f"{shipping_info.address}, {shipping_info.address_no}"
    shipping_info_txt.append(f"{address_full}\n")

    if shipping_info.address_extra:
        shipping_info_txt.append(f"{shipping_info.address_extra}\n")

    shipping_info_txt.append(f"{shipping_info.postal_code} {shipping_info.city}\n")
    shipping_info_txt.append(f"{shipping_info.country}")

    if shipping_info.phone_number:
        shipping_info_txt.append(f"{shipping_info.phone_number}")

    if shipping_info.note:
        note = format_yaml_multiline(shipping_info.note)
        shipping_info_txt.append(f"\n\n{note}")

    shipping_info_txt = "".join(shipping_info_txt)

    return shipping_info_txt


def format_order_items(items: list[CartOrderInfo | dict[str, str | int]]) -> str:
    """
    """

    items_table = []
    for i in items:
        
        if type(i) is dict:
            i['options'] = CartSessionItemOptions(size=None, style=None)
            i = CartOrderInfo(**i)
        
        item_title = i.title
         
        if i.options.style:
            item_title += f" - {i.options.style.capitalize()}"

        if i.options.size:
            item_title += f" Size {i.options.size.upper()}"

        item = (
            f"  - code: '{i.code}'\n"
            f"    title: '{item_title}'\n"
            f"    quantity: '{i.quantity}'\n"
            f"    price: '{i.price}'\n"
        )
         
        items_table.append(item)
         
    items_table = "".join(items_table)

    return items_table


def format_order_shipping_info(shipping_info) -> str:
    """
    """

    note = ""
    if shipping_info.note:
        note = f"|\n{format_yaml_multiline(shipping_info.note, indent=True)}"

    shipping_info_table = (
        f"  first_name: '{shipping_info.first_name or ''}'\n"
        f"  last_name: '{shipping_info.last_name}'\n"
        f"  address: '{shipping_info.address}'\n"
        f"  address_no: '{shipping_info.address_no}'\n"
        f"  address_extra: '{shipping_info.address_extra or ''}'\n"
        f"  postal_code: '{shipping_info.postal_code}'\n"
        f"  city: '{shipping_info.city}'\n"
        f"  country: '{shipping_info.country}'\n"
        f"  note: '{note}'\n"
        f"  email: '{shipping_info.email}'\n"
        f"  phone_number: '{shipping_info.phone_number or ''}'\n"
    )

    return shipping_info_table