# 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": "#24292e",
        "secondary": "#586069",
        "accent": "#0366d6",
        "background": "#FFFFFF",
    },
    "documentTitle": {
        "sizePt": 28,
        "weight": "bold",
        "color": "#24292e",
        "spaceBeforePt": 0,
        "spaceAfterPt": 18,
        "align": "center",
    },
    "headings": {
        "h1": {"sizePt": 22, "weight": "bold", "color": "#24292e", "spaceBeforePt": 24, "spaceAfterPt": 8},
        "h2": {"sizePt": 18, "weight": "bold", "color": "#24292e", "spaceBeforePt": 20, "spaceAfterPt": 6},
        "h3": {"sizePt": 14, "weight": "bold", "color": "#586069", "spaceBeforePt": 16, "spaceAfterPt": 4},
        "h4": {"sizePt": 12, "weight": "bold", "color": "#586069", "spaceBeforePt": 12, "spaceAfterPt": 3},
    },
    "paragraph": {"sizePt": 11, "lineSpacing": 1.5, "color": "#24292e", "align": "left"},
    "table": {
        "headerBg": "#f6f8fa",
        "headerFg": "#24292e",
        "headerSizePt": 10,
        "bodySizePt": 10,
        "rowBandingEven": "#f6f8fa",
        "rowBandingOdd": "#FFFFFF",
        "borderColor": "#e1e4e8",
        "borderWidthPt": 0.5,
        "borderStyle": "grid",
        "bandingEnabled": True,
        "cellPaddingPt": 4,
    },
    "list": {"bulletChar": "\u2022", "indentPt": 18, "sizePt": 11},
    "image": {"defaultWidthPt": 480, "maxWidthPt": 800, "alignment": "center"},
    "codeBlock": {"fontSizePt": 9, "background": "#f6f8fa", "borderColor": "#e1e4e8"},
    "coverPage": {
        "titleSizePt": 28,
        "subtitleSizePt": 16,
        "authorSizePt": 12,
        "dateSizePt": 12,
        "titleColor": "#24292e",
        "subtitleColor": "#586069",
    },
    "caption": {
        "sizePt": 10,
        "color": "#586069",
        "italic": True,
        "align": "center",
    },
    "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 = None) -> Dict[str, Any]:
    """Resolve the effective style: ``DEFAULT_STYLE <- agentStyle``.

    Precedence (lowest to highest): platform defaults, then any explicit
    per-call ``agentStyle`` override.  With no override this returns plain
    :data:`DEFAULT_STYLE`.  Context-aware styling is handled by the AI
    enhancement step in ``mainServiceGeneration.renderReport``.
    """
    resolved = dict(DEFAULT_STYLE)
    if agentStyle:
        resolved = deepMerge(resolved, agentStyle)
    return resolved