"""Optional v2 server-owned fact tables; no writer output accepts these fields."""

import math
import re

GROUPS = {"vimshottari", "ashtakavarga", "shadbala", "functional_roles", "avasthas", "special_points", "sade_sati", "annual"}
PATH = re.compile(r"[A-Za-z0-9_.\[\]-]{1,400}")
STATUSES = {"multi_system_consensus", "single_system_inference", "parameter_sensitive", "unclosed_divisional_chart", "user_history_verification_required", "blocked"}


def validate_fact_tables(value, add):
    def text(item, maximum, minimum=0):
        return isinstance(item, str) and minimum <= len(item) <= maximum

    if not isinstance(value, list) or len(value) > 8:
        add("factTables", "must be array with at most eight groups")
        return
    seen = set()
    for index, table in enumerate(value):
        path = f"factTables[{index}]"
        if not isinstance(table, dict) or set(table) != {"id", "title", "claimStatus", "sourcePath", "note", "columns", "rows"}:
            add(path, "invalid table keys")
            continue
        group = table["id"]
        if not isinstance(group, str) or group not in GROUPS or group in seen:
            add(path, "invalid or duplicate group")
        else:
            seen.add(group)
        source = table["sourcePath"]
        if not isinstance(source, str) or not PATH.fullmatch(source):
            add(path, "invalid source path")
            continue
        if not text(table["title"], 120, 1) or not text(table["note"], 500):
            add(path, "invalid text")
        if table["claimStatus"] not in STATUSES:
            add(path, "invalid claim status")
        columns = table["columns"]
        if not isinstance(columns, list) or not 1 <= len(columns) <= 16 or not all(text(c, 80, 1) for c in columns):
            add(path, "invalid columns")
            continue
        rows = table["rows"]
        if not isinstance(rows, list) or len(rows) > 2000:
            add(path, "invalid rows")
            continue
        for row in rows:
            if not isinstance(row, dict) or set(row) != {"sourcePath", "cells"}:
                add(path, "invalid row keys")
                continue
            origin = row["sourcePath"]
            if not isinstance(origin, str) or not PATH.fullmatch(origin) or not (origin == source or origin.startswith(source + ".") or origin.startswith(source + "[")):
                add(path, "fact_table_source_mismatch")
            cells = row["cells"]
            if not isinstance(cells, list) or len(cells) != len(columns):
                add(path, "fact_table_cell_count")
                continue
            for cell in cells:
                if cell is None or isinstance(cell, bool) or text(cell, 300):
                    continue
                if isinstance(cell, (int, float)) and math.isfinite(cell):
                    continue
                add(path, "invalid cell")