from __future__ import annotations

from typing import Any

try:
    from .prompt_hygiene import combine_negative_text, sanitize_caption_text, sanitize_negative_text, sanitize_prompt_text
except ImportError:  # Allows local smoke tests with `python tools/prompt_smoke.py`.
    from prompt_hygiene import combine_negative_text, sanitize_caption_text, sanitize_negative_text, sanitize_prompt_text


def _trigger_tuple(active_trigger: str) -> tuple[str, ...]:
    trigger = str(active_trigger or "").strip()
    return (trigger,) if trigger else ()


def prepend_trigger(prompt: str, trigger: str, enabled: bool) -> str:
    trigger = str(trigger or "").strip()
    prompt = str(prompt or "")
    if not enabled or not trigger:
        return prompt
    if prompt.lower().startswith(trigger.lower()):
        return prompt
    return f"{trigger}, {prompt}"


def combined_negative(base: str, extra: str) -> str:
    return combine_negative_text(base, extra)


def caption_from_parts(parts: list[Any] | tuple[Any, ...], *, active_trigger: str = "") -> str:
    text = ", ".join(str(part).strip() for part in parts if str(part).strip())
    return sanitize_caption_text(text, triggers=_trigger_tuple(active_trigger))


def _setdefault_nonempty(row: dict[str, Any], key: str, value: Any) -> None:
    if str(row.get(key) or "").strip():
        return
    if str(value or "").strip():
        row[key] = value


def _setdefault_count(row: dict[str, Any], key: str, value: int) -> None:
    if str(row.get(key) or "").strip():
        return
    row[key] = int(value)


def _legacy_subject_metadata(row: dict[str, Any]) -> tuple[str, str, int | None, int | None]:
    subject = str(row.get("primary_subject") or row.get("subject") or "").strip()
    lower = subject.lower()
    if lower in ("woman", "adult woman"):
        return "woman", subject or "woman", 1, 0
    if lower in ("man", "adult man"):
        return "man", subject or "man", 0, 1
    if "two women" in lower:
        return "couple", subject or "two women", 2, 0
    if "two men" in lower:
        return "couple", subject or "two men", 0, 2
    if "woman" in lower and "man" in lower:
        return "couple", subject or "a woman and a man", 1, 1
    if "group" in lower:
        return "group", subject or "mixed adult group", 2, 2
    if "layout" in lower:
        return "layout", subject or "adult layout scene", None, None
    return "", subject, None, None


def enrich_legacy_row_metadata(row: dict[str, Any]) -> dict[str, Any]:
    if row.get("source") != "built_in_generator":
        return row
    subject_type, subject_phrase, women_count, men_count = _legacy_subject_metadata(row)
    _setdefault_nonempty(row, "subject_type", subject_type)
    _setdefault_nonempty(row, "subject_phrase", subject_phrase)
    if women_count is not None:
        _setdefault_count(row, "women_count", women_count)
    if men_count is not None:
        _setdefault_count(row, "men_count", men_count)
    if women_count is not None and men_count is not None and not str(row.get("person_count") or "").strip():
        row["person_count"] = int(women_count) + int(men_count)
    if str(row.get("scene") or "").strip() and not str(row.get("scene_slug") or "").strip():
        row["scene_slug"] = row.get("scene")
    return row


def normalize_prompt_row(
    row: dict[str, Any],
    *,
    active_trigger: str,
    prepend_trigger_to_prompt: bool,
    extra_positive: str = "",
    extra_negative: str = "",
    default_negative: str = "",
) -> dict[str, Any]:
    row = enrich_legacy_row_metadata(row)
    trigger = str(active_trigger or "").strip()
    positive = str(extra_positive or "").strip()
    prompt = str(row.get("prompt", "") or "")
    if positive:
        prompt = f"{prompt.rstrip()} {positive}".strip()
    prompt = prepend_trigger(prompt, trigger, bool(prepend_trigger_to_prompt))
    row["prompt"] = sanitize_prompt_text(prompt, triggers=_trigger_tuple(trigger))
    row["caption"] = sanitize_caption_text(row.get("caption", ""), triggers=_trigger_tuple(trigger))
    row["negative_prompt"] = sanitize_negative_text(
        combined_negative(str(row.get("negative_prompt", default_negative) or ""), extra_negative)
    )
    row["trigger"] = trigger
    return row


def normalize_pair_text_outputs(
    *,
    active_trigger: str,
    prepend_trigger_to_prompt: bool,
    extra_positive: str = "",
    extra_negative: str = "",
    soft_prompt: str,
    hard_prompt: str,
    soft_negative_base: str,
    hard_negative_base: str,
    soft_caption_parts: list[Any] | tuple[Any, ...],
    hard_caption_parts: list[Any] | tuple[Any, ...],
) -> dict[str, str]:
    trigger = str(active_trigger or "").strip()
    positive = str(extra_positive or "").strip()
    if positive:
        soft_prompt = f"{str(soft_prompt or '').rstrip()} {positive}"
        hard_prompt = f"{str(hard_prompt or '').rstrip()} {positive}"
    soft_prompt = prepend_trigger(soft_prompt, trigger, bool(prepend_trigger_to_prompt))
    hard_prompt = prepend_trigger(hard_prompt, trigger, bool(prepend_trigger_to_prompt))
    return {
        "soft_prompt": sanitize_prompt_text(soft_prompt, triggers=_trigger_tuple(trigger)),
        "hard_prompt": sanitize_prompt_text(hard_prompt, triggers=_trigger_tuple(trigger)),
        "soft_negative": sanitize_negative_text(combined_negative(soft_negative_base, extra_negative)),
        "hard_negative": sanitize_negative_text(combined_negative(hard_negative_base, extra_negative)),
        "soft_caption": caption_from_parts(soft_caption_parts, active_trigger=trigger),
        "hard_caption": caption_from_parts(hard_caption_parts, active_trigger=trigger),
    }


def sanitize_metadata_row_text(row: dict[str, Any], *, active_trigger: str = "") -> dict[str, Any]:
    trigger = str(active_trigger or row.get("trigger") or "").strip()
    triggers = _trigger_tuple(trigger)
    if "prompt" in row:
        row["prompt"] = sanitize_prompt_text(row.get("prompt", ""), triggers=triggers)
    if "caption" in row:
        row["caption"] = sanitize_caption_text(row.get("caption", ""), triggers=triggers)
    if "negative_prompt" in row:
        row["negative_prompt"] = sanitize_negative_text(row.get("negative_prompt", ""))
    if trigger and not row.get("trigger"):
        row["trigger"] = trigger
    return row


def _sync_pair_root_row_field(pair: dict[str, Any], row_key: str, root_key: str, row_field: str) -> None:
    row = pair.get(row_key)
    if not isinstance(row, dict):
        return
    if root_key in pair:
        row[row_field] = pair.get(root_key)
    elif row_field in row:
        pair[root_key] = row.get(row_field)


def synchronize_pair_row_outputs(pair: dict[str, Any]) -> dict[str, Any]:
    mapping = (
        ("softcore_row", "softcore_prompt", "softcore_caption", "softcore_negative_prompt"),
        ("hardcore_row", "hardcore_prompt", "hardcore_caption", "hardcore_negative_prompt"),
    )
    for row_key, prompt_key, caption_key, negative_key in mapping:
        _sync_pair_root_row_field(pair, row_key, prompt_key, "prompt")
        _sync_pair_root_row_field(pair, row_key, caption_key, "caption")
        _sync_pair_root_row_field(pair, row_key, negative_key, "negative_prompt")
    return pair


def synchronize_pair_side_metadata(pair: dict[str, Any]) -> dict[str, Any]:
    side_keys = {
        "softcore_row": (
            "softcore_partner_styling",
        ),
        "hardcore_row": (
            "hardcore_clothing_state",
            "character_hardcore_clothing",
            "default_man_hardcore_clothing",
            "hardcore_detail_density",
            "hardcore_position_config",
        ),
    }
    for row_key, keys in side_keys.items():
        for key in keys:
            _sync_pair_root_row_field(pair, row_key, key, key)
    return pair


def synchronize_pair_camera_metadata(pair: dict[str, Any]) -> dict[str, Any]:
    mapping = {
        "softcore_row": (
            ("softcore_camera_config", "camera_config"),
            ("softcore_camera_directive", "camera_directive"),
            ("softcore_camera_scene_directive", "camera_scene_directive"),
        ),
        "hardcore_row": (
            ("hardcore_camera_config", "camera_config"),
            ("hardcore_camera_directive", "camera_directive"),
            ("hardcore_camera_scene_directive", "camera_scene_directive"),
        ),
    }
    for row_key, keys in mapping.items():
        for source_key, target_key in keys:
            _sync_pair_root_row_field(pair, row_key, source_key, target_key)
    return pair


def synchronize_pair_cast_metadata(pair: dict[str, Any]) -> dict[str, Any]:
    descriptors = pair.get("shared_cast_descriptors")
    if isinstance(descriptors, list):
        descriptor_list = [str(item).strip() for item in descriptors if str(item or "").strip()]
        descriptor_text = "; ".join(descriptor_list)
    else:
        descriptor_text = str(descriptors or "").strip()
        descriptor_list = [descriptor_text] if descriptor_text else []
    if not descriptor_text:
        return pair

    options = pair.get("options") if isinstance(pair.get("options"), dict) else {}
    row_keys = ["hardcore_row"]
    if options.get("softcore_cast") == "same_as_hardcore":
        row_keys.append("softcore_row")
    for row_key in row_keys:
        row = pair.get(row_key)
        if not isinstance(row, dict):
            continue
        row["cast_descriptor_text"] = descriptor_text
        row["cast_descriptors"] = list(descriptor_list)
    return pair


def normalize_pair_metadata(pair: dict[str, Any], *, active_trigger: str = "") -> dict[str, Any]:
    trigger = str(active_trigger or "").strip()
    triggers = _trigger_tuple(trigger)
    synchronize_pair_row_outputs(pair)
    synchronize_pair_side_metadata(pair)
    synchronize_pair_camera_metadata(pair)
    synchronize_pair_cast_metadata(pair)
    for key in ("softcore_prompt", "hardcore_prompt"):
        if key in pair:
            pair[key] = sanitize_prompt_text(pair.get(key, ""), triggers=triggers)
    for key in ("softcore_caption", "hardcore_caption"):
        if key in pair:
            pair[key] = sanitize_caption_text(pair.get(key, ""), triggers=triggers)
    for key in ("softcore_negative_prompt", "hardcore_negative_prompt"):
        if key in pair:
            pair[key] = sanitize_negative_text(pair.get(key, ""))
    for key in ("softcore_row", "hardcore_row"):
        if isinstance(pair.get(key), dict):
            pair[key] = sanitize_metadata_row_text(pair[key], active_trigger=trigger)
    return pair