from pptx import Presentation
from pptx.util import Inches, Pt
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN
from pptx.oxml.ns import qn
from lxml import etree

OUT_PATH = r"C:\Users\jhodgkin\Documents\dev\primary-song-slides\MyCountryTisOfThee.pptx"

SLIDE_W = Inches(13.333)
SLIDE_H = Inches(7.5)

NAVY   = RGBColor(0x0D, 0x27, 0x6D)
GOLD   = RGBColor(0xF5, 0xC5, 0x18)
WHITE  = RGBColor(0xFF, 0xFF, 0xFF)

VERSES = [
    (
        "Verse 1",
        "My country, 'tis of thee,\n"
        "Sweet land of liberty,\n"
        "Of thee I sing;\n"
        "Land where my fathers died,\n"
        "Land of the pilgrims' pride,\n"
        "From ev'ry mountainside\n"
        "Let freedom ring!"
    ),
    (
        "Verse 4",
        "Our fathers' God, to thee,\n"
        "Author of liberty,\n"
        "To thee we sing;\n"
        "Long may our land be bright\n"
        "With freedom's holy light.\n"
        "Protect us by thy might,\n"
        "Great God, our King!"
    ),
]


def set_background_color(slide, color):
    """Fill slide background with a solid color."""
    bg = slide.background
    fill = bg.fill
    fill.solid()
    fill.fore_color.rgb = color


def add_text_paragraph(tf, text, font_size, color, bold=False, space_before=0):
    p = tf.add_paragraph()
    p.alignment = PP_ALIGN.CENTER
    if space_before:
        pPr = p._pPr
        if pPr is None:
            pPr = p._p.get_or_add_pPr()
        pPr.set(qn("a:spcBef"), None)
        spcBef = etree.SubElement(pPr, qn("a:spcBef"))
        spcPts = etree.SubElement(spcBef, qn("a:spcPts"))
        spcPts.set("val", str(space_before * 100))
    run = p.add_run()
    run.text = text
    run.font.size = font_size
    run.font.color.rgb = color
    run.font.bold = bold
    return p


def add_slide(prs, blank_layout, verse_label, verse_text):
    slide = prs.slides.add_slide(blank_layout)
    set_background_color(slide, NAVY)

    # Gold decorative rule above title
    rule_top = Inches(0.55)
    rule_h = Inches(0.06)
    rule = slide.shapes.add_shape(
        1,  # MSO_SHAPE_TYPE.RECTANGLE
        Inches(1.5), rule_top, SLIDE_W - Inches(3.0), rule_h
    )
    rule.fill.solid()
    rule.fill.fore_color.rgb = GOLD
    rule.line.fill.background()

    # Song title
    title_box = slide.shapes.add_textbox(Inches(0.5), Inches(0.65), SLIDE_W - Inches(1.0), Inches(0.85))
    tf = title_box.text_frame
    tf.word_wrap = False
    p = tf.paragraphs[0]
    p.alignment = PP_ALIGN.CENTER
    run = p.add_run()
    run.text = "My Country, 'Tis of Thee"
    run.font.size = Pt(36)
    run.font.color.rgb = GOLD
    run.font.bold = True

    # Verse label
    label_box = slide.shapes.add_textbox(Inches(0.5), Inches(1.45), SLIDE_W - Inches(1.0), Inches(0.5))
    tf2 = label_box.text_frame
    p2 = tf2.paragraphs[0]
    p2.alignment = PP_ALIGN.CENTER
    run2 = p2.add_run()
    run2.text = verse_label
    run2.font.size = Pt(22)
    run2.font.color.rgb = WHITE
    run2.font.bold = False
    run2.font.italic = True

    # Gold rule below label
    rule2 = slide.shapes.add_shape(
        1,
        Inches(1.5), Inches(1.95), SLIDE_W - Inches(3.0), rule_h
    )
    rule2.fill.solid()
    rule2.fill.fore_color.rgb = GOLD
    rule2.line.fill.background()

    # Verse lyrics
    lyric_box = slide.shapes.add_textbox(Inches(0.5), Inches(2.1), SLIDE_W - Inches(1.0), Inches(5.0))
    tf3 = lyric_box.text_frame
    tf3.word_wrap = True
    lines = verse_text.split("\n")
    for i, line in enumerate(lines):
        if i == 0:
            p = tf3.paragraphs[0]
        else:
            p = tf3.add_paragraph()
        p.alignment = PP_ALIGN.CENTER
        run = p.add_run()
        run.text = line
        run.font.size = Pt(40)
        run.font.color.rgb = WHITE
        run.font.bold = False

    print(f"  Added: {verse_label}")


def main():
    prs = Presentation()
    prs.slide_width = SLIDE_W
    prs.slide_height = SLIDE_H
    blank_layout = prs.slide_layouts[6]

    for label, text in VERSES:
        add_slide(prs, blank_layout, label, text)

    prs.save(OUT_PATH)
    print(f"\nSaved: {OUT_PATH}  ({len(VERSES)} slides)")


if __name__ == "__main__":
    main()