"""Build the Zimmer Biomet PowerPoint template from extracted assets.

Reads `assets/cover-background.jpeg` and `assets/bottom-border.jpg`,
emits `zb-template.pptx` with two slides demonstrating the cover and
content layouts. Re-run this script whenever assets change.
"""
from pptx import Presentation
from pptx.util import Inches, Pt, Emu
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN
import os

HERE = os.path.dirname(os.path.abspath(__file__))
ASSET = os.path.join(HERE, "assets")
OUT = os.path.join(HERE, "zb-template.pptx")

# Slide-size constants in EMU (English Metric Units; 914400 EMU = 1 inch)
SLIDE_W = Inches(13.33)
SLIDE_H = Inches(7.5)

# Brand colors from the example deck's slideLayout22 / slideLayout33 XML
COVER_TITLE_COLOR = RGBColor(0xF4, 0xF4, 0xF4)       # near-white for cover title over dark bg
CONTENT_TITLE_COLOR = RGBColor(0x00, 0x66, 0xB3)     # Zimmer blue
SLIDE_NUMBER_COLOR = RGBColor(0x2B, 0x2A, 0x80)      # dark navy/purple
CONFIDENTIAL_COLOR = RGBColor(0x40, 0x40, 0x40)      # dark gray on the white margin above the border

CONFIDENTIAL_TEXT = "CONFIDENTIAL – FOR ZIMMER BIOMET INTERNAL USE ONLY"


def add_textbox(slide, left, top, width, height, text, *, font_size=12,
                color=None, bold=False, align=None, font_name="Arial"):
    tx = slide.shapes.add_textbox(left, top, width, height)
    tf = tx.text_frame
    tf.margin_left = tf.margin_right = tf.margin_top = tf.margin_bottom = 0
    p = tf.paragraphs[0]
    if align is not None:
        p.alignment = align
    r = p.add_run()
    r.text = text
    r.font.name = font_name
    r.font.size = Pt(font_size)
    r.font.bold = bold
    if color is not None:
        r.font.color.rgb = color
    return tx


def build_cover(slide):
    """Cover slide: full-bleed background image + title in upper-left, white text."""
    slide.shapes.add_picture(
        os.path.join(ASSET, "cover-background.jpeg"),
        left=0, top=0, width=SLIDE_W, height=SLIDE_H,
    )
    add_textbox(
        slide,
        left=Inches(0.92), top=Inches(1.38),
        width=Inches(6.0), height=Inches(1.89),
        text="Deck Title",
        font_size=28, bold=True, color=COVER_TITLE_COLOR,
    )
    add_textbox(
        slide,
        left=Inches(0.92), top=Inches(3.30),
        width=Inches(6.0), height=Inches(0.5),
        text="Subtitle / date / author",
        font_size=14, color=COVER_TITLE_COLOR,
    )


def build_content(slide, *, title="Section title", page_number="2"):
    """Content slide: title at top, content area, bottom border + slide number + confidentiality text."""
    add_textbox(
        slide,
        left=Inches(0.92), top=Inches(0.40),
        width=Inches(11.5), height=Inches(0.85),
        text=title,
        font_size=28, bold=True, color=CONTENT_TITLE_COLOR,
    )
    placeholder = add_textbox(
        slide,
        left=Inches(0.92), top=Inches(1.50),
        width=Inches(11.5), height=Inches(4.80),
        text=("Body content goes here.\n"
              "• Bullet one\n"
              "• Bullet two\n"
              "• Bullet three"),
        font_size=18, color=RGBColor(0x33, 0x33, 0x33),
    )
    placeholder.text_frame.word_wrap = True

    slide.shapes.add_picture(
        os.path.join(ASSET, "bottom-border.jpg"),
        left=Inches(0.01), top=Inches(6.76),
        width=Inches(13.32), height=Inches(0.74),
    )
    add_textbox(
        slide,
        left=Inches(0.29), top=Inches(6.55),
        width=Inches(8.0), height=Inches(0.20),
        text=CONFIDENTIAL_TEXT,
        font_size=8, color=CONFIDENTIAL_COLOR,
    )
    add_textbox(
        slide,
        left=Inches(12.85), top=Inches(6.55),
        width=Inches(0.40), height=Inches(0.20),
        text=page_number,
        font_size=10, color=SLIDE_NUMBER_COLOR, align=PP_ALIGN.RIGHT,
    )


def main():
    prs = Presentation()
    prs.slide_width = SLIDE_W
    prs.slide_height = SLIDE_H

    blank = prs.slide_layouts[6]

    cover = prs.slides.add_slide(blank)
    build_cover(cover)

    content = prs.slides.add_slide(blank)
    build_content(content, title="Content slide example", page_number="2")

    second_content = prs.slides.add_slide(blank)
    build_content(second_content, title="Another content slide", page_number="3")

    prs.save(OUT)
    print(f"Wrote {OUT}")


if __name__ == "__main__":
    main()