# Procyon — one-page PDF resume renderer (fpdf2).
# Takes a structured resume dict and lays it out on a single letter page.

import os

DATA_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'data', 'resumes')

DEJAVU = {
    '': '/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf',
    'B': '/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf',
    'I': '/usr/share/fonts/truetype/dejavu/DejaVuSans-Oblique.ttf',
    'BI': '/usr/share/fonts/truetype/dejavu/DejaVuSans-BoldOblique.ttf',
}


def _register_fonts(pdf):
    if all(os.path.exists(p) for p in DEJAVU.values()):
        pdf.add_font('DejaVu', '', DEJAVU[''])
        pdf.add_font('DejaVu', 'B', DEJAVU['B'])
        pdf.add_font('DejaVu', 'I', DEJAVU['I'])
        pdf.add_font('DejaVu', 'BI', DEJAVU['BI'])
        return 'DejaVu'
    return 'Helvetica'


def _sanitize(text):
    if not text:
        return ''
    repl = {'\u2014': '-', '\u2013': '-', '\u2192': '->', '\u2022': '\u00b7',
            '\u2018': "'", '\u2019': "'", '\u201c': '"', '\u201d': '"', '\u2026': '...'}
    for k, v in repl.items():
        text = text.replace(k, v)
    return text.encode('latin-1', 'replace').decode('latin-1')


def render(resume, out_path=None, name='Indiana Holmes'):
    """resume: dict with header/summary/skills/experience/education. Returns PDF path."""
    from fpdf import FPDF

    pdf = FPDF(format='letter')
    pdf.set_margins(13, 13, 13)
    pdf.set_auto_page_break(True, margin=11)
    pdf.add_page()
    font = _register_fonts(pdf)

    def clean(s):
        return s if font == 'DejaVu' else _sanitize(s)

    def cell(w, h, txt, style='', size=9):
        pdf.set_font(font, style, size)
        pdf.cell(w, h, clean(txt), new_x="LMARGIN", new_y="NEXT")

    def mc(w, h, txt, style='', size=9, indent=None):
        pdf.set_font(font, style, size)
        if indent is not None:
            pdf.set_x(indent)
        pdf.multi_cell(w, h, clean(txt), new_x="LMARGIN", new_y="NEXT")

    def colored(r, g, b):
        pdf.set_text_color(r, g, b)

    # --- Header ---
    cell(0, 8, name, 'B', 17)
    if resume.get('contact'):
        colored(90, 100, 120)
        mc(0, 4.2, resume['contact'], '', 8.5)
        colored(20, 20, 20)
    if resume.get('headline'):
        pdf.ln(0.5)
        colored(0, 90, 120)
        mc(0, 4.6, resume['headline'], 'BI', 9.5)
        colored(20, 20, 20)

    def section(title):
        pdf.ln(2)
        colored(0, 70, 100)
        cell(0, 5, title.upper(), 'B', 10)
        colored(20, 20, 20)
        pdf.set_draw_color(0, 70, 100)
        pdf.set_line_width(0.3)
        pdf.line(13, pdf.get_y(), 202.9, pdf.get_y())
        pdf.ln(1.2)

    if resume.get('summary'):
        mc(0, 4.4, resume['summary'], '', 9)
        pdf.ln(1)

    if resume.get('skills'):
        section('Core Skills')
        mc(0, 4.4, '   \u00b7   '.join(resume['skills']), '', 8.5)

    if resume.get('experience'):
        section('Experience')
        for e in resume['experience']:
            cell(0, 4.6, e.get('title', ''), 'B', 9.5)
            meta = '   \u2014   '.join(x for x in [e.get('company', ''), e.get('dates', '')] if x)
            colored(80, 90, 110)
            mc(0, 4.2, meta, 'I', 8.5)
            colored(20, 20, 20)
            for b in e.get('bullets', []):
                mc(0, 4.2, '\u00b7  ' + b, '', 8.5, indent=16)
            pdf.ln(0.8)

    if resume.get('projects'):
        section('Key Projects')
        for p in resume['projects']:
            cell(0, 4.6, p.get('title', ''), 'B', 9)
            for b in p.get('bullets', []):
                mc(0, 4.2, '\u00b7  ' + b, '', 8.5, indent=16)
            pdf.ln(0.8)

    if resume.get('education'):
        section('Education')
        mc(0, 4.4, resume['education'], '', 9)

    os.makedirs(DATA_DIR, exist_ok=True)
    if not out_path:
        out_path = os.path.join(DATA_DIR, 'resume.pdf')
    pdf.output(out_path)
    return out_path