from __future__ import annotations


def build_approval_card(title: str, action_id: str, confirm_text: str = "确认", reject_text: str = "拒绝") -> dict:
    return {
        "cards_v2": [
            {
                "card_id": action_id,
                "card": {
                    "header": {"title": title, "imageType": "SQUARE"},
                    "sections": [
                        {
                            "widgets": [
                                {
                                    "buttonList": {
                                        "buttons": [
                                            _make_button(confirm_text, "approve", green=True),
                                            _make_button(reject_text, "reject", green=False),
                                        ]
                                    }
                                }
                            ]
                        }
                    ],
                },
            }
        ]
    }


def build_poll_card(question: str, options: list[str], action_id: str) -> dict:
    buttons = [_make_button(opt, f"poll_vote_{i}_{action_id}") for i, opt in enumerate(options)]

    sections: list[dict] = []
    while buttons:
        chunk = buttons[:2]
        buttons = buttons[2:]
        sections.append({"widgets": [{"buttonList": {"buttons": chunk}}]})

    return {
        "cards_v2": [
            {
                "card_id": action_id,
                "card": {
                    "header": {"title": question, "imageType": "SQUARE"},
                    "sections": sections,
                },
            }
        ]
    }


def build_info_card(title: str, fields: dict[str, str]) -> dict:
    widgets = []
    for key, value in fields.items():
        widgets.append(
            {
                "decoratedText": {
                    "topLabel": key,
                    "text": value,
                }
            }
        )

    return {
        "cards_v2": [
            {
                "card": {
                    "header": {"title": title},
                    "sections": [{"widgets": widgets}],
                }
            }
        ]
    }


def build_form_card(title: str, fields: list[dict], submit_action: str) -> dict:
    widgets = []
    for field in fields:
        field_input_type = field.get("input_type", "SINGLE_LINE")

        if field_input_type in ("SINGLE_SELECT", "MULTI_SELECT"):
            widgets.append(
                {
                    "selectionInput": {
                        "label": field.get("label", ""),
                        "name": field.get("name", ""),
                        "type": field_input_type,
                        "items": _build_selection_items(field.get("options", [])),
                    }
                }
            )
        elif field_input_type == "DIVIDER":
            widgets.append({"divider": {}})
        else:
            widgets.append(
                {
                    "textInput": {
                        "label": field.get("label", ""),
                        "name": field.get("name", ""),
                        "type": field_input_type,
                    }
                }
            )

    widgets.append({"buttonList": {"buttons": [_make_button("提交", submit_action, green=True)]}})

    return {
        "cards_v2": [
            {
                "card": {
                    "header": {"title": title},
                    "sections": [{"widgets": widgets}],
                }
            }
        ]
    }


def build_exec_approval_card(
    title: str,
    action_id: str,
    detail_fields: dict[str, str] | None = None,
) -> dict:
    widgets = []

    if detail_fields:
        for key, value in detail_fields.items():
            widgets.append(
                {
                    "decoratedText": {
                        "topLabel": key,
                        "text": value,
                    }
                }
            )

    widgets.append(
        {
            "buttonList": {
                "buttons": [
                    _make_button("确认执行", f"exec_approve_{action_id}", green=True),
                    _make_button("拒绝执行", f"exec_reject_{action_id}", green=False),
                ]
            }
        }
    )

    return {
        "cards_v2": [
            {
                "card": {
                    "header": {"title": title, "imageType": "SQUARE"},
                    "sections": [{"widgets": widgets}],
                }
            }
        ]
    }


def build_selection_card(
    title: str,
    selection_name: str,
    label: str,
    options: list[dict[str, str]],
    selection_type: str = "SINGLE_SELECT",
    submit_action: str | None = None,
) -> dict:
    widgets = [
        {
            "selectionInput": {
                "label": label,
                "name": selection_name,
                "type": selection_type,
                "items": _build_selection_items(options),
            }
        }
    ]

    if submit_action:
        widgets.append({"buttonList": {"buttons": [_make_button("提交", submit_action, green=True)]}})

    return {
        "cards_v2": [
            {
                "card": {
                    "header": {"title": title},
                    "sections": [{"widgets": widgets}],
                }
            }
        ]
    }


def _make_divider() -> dict:
    return {"divider": {}}


def _build_selection_items(options: list[dict[str, str]]) -> list[dict]:
    items = []
    for opt in options:
        items.append(
            {
                "text": opt.get("text", opt.get("label", "")),
                "value": opt.get("value", ""),
                "selected": opt.get("selected", False),
            }
        )
    return items


def _make_button(text: str, action: str, green: bool = False) -> dict:
    color = {"red": 0, "green": 0.6, "blue": 0} if green else {"red": 0.6, "green": 0, "blue": 0}
    return {
        "text": text,
        "color": color,
        "onClick": {"action": {"function": action}},
    }