from __future__ import annotations

import re
from typing import Any


def _clean(value: Any) -> str:
    text = "" if value is None else str(value)
    text = text.replace("\n", " ")
    text = re.sub(r"\s+", " ", text).strip()
    text = re.sub(r"\s+([,.;:])", r"\1", text)
    return text


def pov_labels_from_value(value: Any) -> list[str]:
    labels: list[str] = []
    if isinstance(value, list):
        candidates = value
    else:
        candidates = re.split(r"[,;]\s*", _clean(value)) if _clean(value) else []
    for candidate in candidates:
        label = _clean(candidate)
        if re.match(r"^Man [A-Z]$", label) and label not in labels:
            labels.append(label)
    return labels


def merge_labels(*groups: list[str]) -> list[str]:
    merged: list[str] = []
    for group in groups:
        for label in group:
            if label and label not in merged:
                merged.append(label)
    return merged


def filter_pov_labeled_clauses(text: Any, pov_labels: list[str]) -> str:
    rendered = _clean(text)
    if not rendered or not pov_labels:
        return rendered
    clauses = [clause.strip() for clause in rendered.split(";") if clause.strip()]
    filtered = [
        clause
        for clause in clauses
        if not any(re.match(rf"^{re.escape(label)}\b", clause) for label in pov_labels)
    ]
    return "; ".join(filtered)


def pov_camera_phrase(pov_labels: list[str], softcore: bool = False) -> str:
    if not pov_labels:
        return ""
    if softcore:
        return (
            "Camera is the male participant's first-person creator view in one continuous frame, with him implied by perspective or foreground cues"
        )
    return (
        "Camera is the male participant's first-person view in one continuous frame; only his foreground hands or body cues appear"
    )


def pov_composition_text(composition: Any, pov_labels: list[str]) -> str:
    text = _clean(composition)
    if not text or not pov_labels:
        return text
    text = re.sub(r"\ball participants visible\b", "visible partners readable", text, flags=re.IGNORECASE)
    text = re.sub(r"\ball adult bodies visible\b", "visible partners readable", text, flags=re.IGNORECASE)
    text = re.sub(r"\ball bodies visible\b", "visible partners readable", text, flags=re.IGNORECASE)
    text = re.sub(r"\ball three bodies readable\b", "visible partner bodies readable", text, flags=re.IGNORECASE)
    text = re.sub(r"\bwide group-sex composition\b", "first-person group-sex POV composition", text, flags=re.IGNORECASE)
    text = re.sub(
        r",?\s*adapted for first-person POV with the POV participant kept off-camera\b",
        "",
        text,
        flags=re.IGNORECASE,
    )
    text = re.sub(r",?\s*with the POV participant kept off-camera\b", "", text, flags=re.IGNORECASE)
    return _clean(text)