"""English edition of the user-facing PL9 reader (TASK-report-english-edition-20260929).

The Chinese reader is ``pl9_reader_export._render_pl9_user_markdown``: it renders the
parity volume and then localises it with ordered string passes. The English
edition renders the same parity volume from the same packet with
``report_language = 'en'`` (planet and sign tokens stay English, yoga rows use the
engine's ``*_en`` twins), then:

1. drops the same audit-only lines and page references as the Chinese reader;
2. replaces the renderer's hard-coded Chinese labels with fixed English text
   (``pl9_reader_english_terms``);
3. replaces engineering vocabulary with English public wording.

Nothing here computes. A Chinese character that survives is a missing entry,
and the caller treats the English edition as unavailable rather than shipping it.
"""

from __future__ import annotations

import copy
import re

try:
    from scripts.pl9_reader_english_terms import PHRASES_EN, REGEX_EN
except ModuleNotFoundError:  # pragma: no cover - direct scripts/ execution
    from pl9_reader_english_terms import PHRASES_EN, REGEX_EN

HAN = re.compile(r"[㐀-鿿豈-﫿]")


def han_leaks(text: str) -> list[str]:
    """Distinct runs of Han characters, for the self-check and for tests."""
    return sorted(set(re.findall(r"[㐀-鿿豈-﫿]+", text)))


def _english_packet(packet: dict) -> dict:
    """Deep copy with the language flag set and yoga rows switched to their English twins."""
    english = copy.deepcopy(packet)
    english['report_language'] = 'en'
    advanced = ((english.get('worksheets') or {}).get('advanced_systems') or {})
    yoga = advanced.get('yoga') if isinstance(advanced, dict) else None
    if isinstance(yoga, dict):
        for key in ('detected_yogas', 'yogas'):
            rows = yoga.get(key)
            if not isinstance(rows, list):
                continue
            for row in rows:
                if not isinstance(row, dict):
                    continue
                if 'combination_en' in row:
                    row['combination'] = row['combination_en']
                if 'effects_en' in row:
                    row['effects'] = row['effects_en']
                if 'strength_en' in row:
                    row['strength'] = row['strength_en']
                row['name_cn'] = row.get('name') or row.get('name_cn')
    return english


def _public_wording_en(text: str) -> str:
    """English counterpart of the Chinese reader's engineering-vocabulary pass."""
    for raw, public in (
        ("parameter_sensitive / unverified", "to be checked"),
        ("pyjhora_behavior_only / not_multiengine_parity", "reference"),
        ("blocked_and_conflict_fields_cannot_generate_final_predictions", "data only"),
        ("parameter_sensitive", "reference"),
        ("partial_verified", "listed"),
        ("pyjhora_behavior_only", "reference"),
        ("restricted_or_unclosed", "to be checked"),
        ("blocked_external_callable", "external replay pending"),
        ("not_applicable", "not listed"),
        ("missing_in_local", "not listed separately"),
        ("functional_role_not_returned", "not listed separately"),
        ("external_mudda_start_boundary", "reference start"),
        ("dasha_beginning_dates", "start dates"),
        ("dasha_ending_dates", "end dates"),
        ("natural_benefic", "natural benefic"),
        ("natural_malefic", "natural malefic"),
        ("functional_benefic", "functional benefic"),
        ("functional_malefic", "functional malefic"),
        ("functional_neutral", "functional neutral"),
        ("observed_relationships", "formed"),
        ("observed_empty", "not formed"),
        ("external_replay_pending", "pending"),
        ("annual_tajika_pack", "annual structure"),
        ("kp_monthly_report_packet", "monthly focus"),
        ("source_path", "source"),
        ("{planets}", "the planets involved"),
        ("blocked", "not listed"),
    ):
        text = text.replace(raw, public)
    text = re.sub(r"\b[a-zA-Z_]+_profile\b", "calculation setting", text)
    text = re.sub(r"\b[a-zA-Z_]+_status\b", "status", text)
    text = re.sub(r"\b[a-zA-Z_]+_producer\b", "calculation", text)
    text = re.sub(r"\b[a-zA-Z_]+_path\b", "source", text)
    text = re.sub(r"\bproducer\b", "calculation", text, flags=re.I)
    text = re.sub(r"\bschema\b", "structure", text, flags=re.I)
    text = re.sub(r"\bprofile\b", "setting", text)
    text = re.sub(r"\bProfile\b", "Setting", text)
    text = re.sub(r"\baudit\b", "check", text)
    return text


def _translate(text: str) -> str:
    for pattern, replacement in REGEX_EN:
        text = pattern.sub(replacement, text)
    for raw, public in PHRASES_EN:
        text = text.replace(raw, public)
    return text


def render_pl9_user_markdown_en(packet: dict) -> str:
    """Render the English reader volume from the same packet the Chinese one uses."""
    try:
        from scripts import pl9_reader_export as reader
    except ModuleNotFoundError:  # pragma: no cover - direct scripts/ execution
        import pl9_reader_export as reader

    english = _english_packet(packet)
    text = reader.render_pl9_parity_markdown(english)
    title = reader._pl9_english_report_title(english)
    text = re.sub(r"^#\s+.*$", f"# {title}", text, count=1, flags=re.MULTILINE)
    text = re.sub(r"（PL9 p\d+(?:-p\d+)?[^）]*）", "", text)
    text = re.sub(r"\s*\(PL9 p\d+(?:-p\d+)?[^)]*\)", "", text)
    drop_fragments = (
        "本册只编排原版",
        "研究性证据",
        "审计",
        "producer",
        "PyJHora",
        "source_path",
        "schema",
        "blocked",
        "parameter_sensitive",
        "native producer",
        "Report Layers",
        "Worksheet Index",
        "Report Pack Manifest",
        "发布状态",
        "质量检查",
        "Chart Identity",
        "不自动进入公开发布",
        "对标主册",
    )
    lines: list[str] = []
    for raw_line in text.splitlines():
        if any(fragment in raw_line for fragment in drop_fragments):
            continue
        line = re.sub(r"p\d+-p\d+\s*", "", raw_line)
        line = re.sub(r"p\d+\s*[·.-]\s*", "", line)
        line = re.sub(r"^#+\s*p\d+\s*", lambda match: match.group(0).replace(match.group(0).split()[-1], ""), line)
        line = line.replace(" · ", " ")
        lines.append(line.rstrip())
    text = "\n".join(lines)
    text = _translate(text)
    text = text.replace("PL9 p", "p. ").replace("PL9", "classical Jyotish")
    text = _public_wording_en(text)
    text = re.sub(r"(?m)^(#{2,6}\s*)p\d+(?:-p\d+)?\s*[·.-]?\s*", r"\1", text)
    text = re.sub(r"(?m)^(#{1,6})\s+/\s+", r"\1 ", text)
    text = re.sub(r"(?m)^(#{1,6}) {2,}", r"\1 ", text)
    text = re.sub(r"^#\s+.*$", f"# {title}", text, count=1, flags=re.MULTILINE)
    # Full-width punctuation from the shared renderer reads badly in English.
    for wide, ascii_form in (("；", "; "), ("，", ", "), ("：", ": "), ("、", ", "), ("（", " ("), ("）", ")"), ("—", " - ")):
        text = text.replace(wide, ascii_form)
    text = re.sub(r"(?<=\S) {2,}(?=\S)", " ", text)
    text = re.sub(r"\( ", "(", text)
    text = re.sub(r"[ \t]+\n", "\n", text)
    text = re.sub(r"\n{3,}", "\n\n", text).strip() + "\n"
    return text