# Copyright (c) 2025 Patrick Motsch
# All rights reserved.
"""Default style definitions and style resolution for document rendering."""

from typing import Any, Dict


DEFAULT_STYLE: Dict[str, Any] = {
    "fonts": {
        "primary": "Calibri",
        "monospace": "Consolas",
    },
    "colors": {
        "primary": "#1F3864",
        "secondary": "#2C3E50",
        "accent": "#2980B9",
        "background": "#FFFFFF",
    },
    "headings": {
        "h1": {"sizePt": 24, "weight": "bold", "color": "#1F3864", "spaceBeforePt": 12, "spaceAfterPt": 6},
        "h2": {"sizePt": 18, "weight": "bold", "color": "#1F3864", "spaceBeforePt": 10, "spaceAfterPt": 4},
        "h3": {"sizePt": 14, "weight": "bold", "color": "#2C3E50", "spaceBeforePt": 8, "spaceAfterPt": 3},
        "h4": {"sizePt": 12, "weight": "bold", "color": "#2C3E50", "spaceBeforePt": 6, "spaceAfterPt": 2},
    },
    "paragraph": {"sizePt": 11, "lineSpacing": 1.15, "color": "#333333"},
    "table": {
        "headerBg": "#1F3864",
        "headerFg": "#FFFFFF",
        "headerSizePt": 10,
        "bodySizePt": 10,
        "rowBandingEven": "#F2F6FC",
        "rowBandingOdd": "#FFFFFF",
        "borderColor": "#CBD5E1",
        "borderWidthPt": 0.5,
    },
    "list": {"bulletChar": "\u2022", "indentPt": 18, "sizePt": 11},
    "image": {"defaultWidthPt": 480, "maxWidthPt": 800, "alignment": "center"},
    "codeBlock": {"fontSizePt": 9, "background": "#F8F9FA", "borderColor": "#E2E8F0"},
    "page": {
        "format": "A4",
        "marginsPt": {"top": 60, "bottom": 60, "left": 60, "right": 60},
        "showPageNumbers": True,
        "headerHeight": 30,
        "footerHeight": 30,
        "headerLogo": None,
        "headerText": "",
        "footerText": "",
    },
}


def _deepMerge(base: Dict[str, Any], override: Dict[str, Any]) -> Dict[str, Any]:
    """Recursively merge override into base. Both dicts left unchanged; returns new dict."""
    result = {}
    for key in base:
        if key in override:
            baseVal = base[key]
            overVal = override[key]
            if isinstance(baseVal, dict) and isinstance(overVal, dict):
                result[key] = _deepMerge(baseVal, overVal)
            else:
                result[key] = overVal
        else:
            result[key] = base[key]
    for key in override:
        if key not in base:
            result[key] = override[key]
    return result


def resolveStyle(agentStyle: dict | None) -> Dict[str, Any]:
    """Deep-merge DEFAULT_STYLE <- agentStyle. Returns fully resolved style dict."""
    if not agentStyle:
        return dict(DEFAULT_STYLE)
    return _deepMerge(DEFAULT_STYLE, agentStyle)