import os
import subprocess
from datetime import datetime

# In your latex_utils.py
def generate_latex(cv_data):
    latex_template = r"""\documentclass[12pt]{resume}
\usepackage[left=0.5in, right=0.5in, top=0.4in, bottom=0.4in]{geometry}
\usepackage[hidelinks]{hyperref}
\usepackage{enumitem}
\usepackage{parskip}
\usepackage{fontawesome5}

\name{\parbox{\linewidth}{\centering %(name)s \\ \normalsize}}

\begin{document}

% Contact Info
\vspace{-20pt}
\begin{center}
\small
 \href{mailto:%(email)s}{%(email)s} \textbar{} 
 %(phone)s \textbar{} 
 \href{%(linkedin)s}{LinkedIn} \textbar{} 
 \href{https://github.com/}{GitHub}
\end{center}
\vspace{-8pt}

\small

% Professional Summary
\begin{rSection}{Professional Summary}
%(summary)s
\end{rSection}

%(sections)s
\end{document}
"""

    # Ensure all required fields have default values
    cv_data.setdefault('name', '')
    cv_data.setdefault('email', '')
    cv_data.setdefault('phone', '')
    cv_data.setdefault('linkedin', '')
    cv_data.setdefault('summary', '')
    
    # Generate sections dynamically
    sections = ""
    for section in ['skills', 'experience', 'education', 'projects']:
        if section in cv_data and cv_data[section]:
            sections += f"\\begin{{rSection}}{{{section.capitalize()}}}\n"
            # Add section content here
            sections += "% Add your section content generation logic\n"
            sections += "\\end{rSection}\n\n"
    
    return latex_template % {
        'name': cv_data['name'],
        'email': cv_data['email'],
        'phone': cv_data['phone'],
        'linkedin': cv_data['linkedin'],
        'summary': cv_data['summary'],
        'sections': sections
    }

def compile_latex_to_pdf(tex_file, output_dir):
    """Compile LaTeX file to PDF using latexmk"""
    try:
        result = subprocess.run(
            ['latexmk', '-pdf', '-quiet', '-output-directory=' + output_dir, tex_file],
            cwd=output_dir,
            check=True,
            capture_output=True
        )
        
        pdf_file = os.path.splitext(tex_file)[0] + '.pdf'
        if os.path.exists(pdf_file):
            return pdf_file
    except subprocess.CalledProcessError as e:
        print(f"LaTeX compilation failed: {e.stderr.decode()}")
        return None
    except Exception as e:
        print(f"Error during LaTeX compilation: {str(e)}")
        return None
    
    return None