from pathlib import Path

from reportlab.lib import colors
from reportlab.lib.enums import TA_CENTER
from reportlab.lib.pagesizes import LETTER
from reportlab.lib.styles import ParagraphStyle, getSampleStyleSheet
from reportlab.lib.units import inch
from reportlab.platypus import Paragraph, SimpleDocTemplate, Spacer, Table, TableStyle


ROOT = Path(__file__).resolve().parents[1]
OUT = ROOT / "docs" / "prototype_v0_budget_2026-05-07.pdf"


BREAKDOWN = [
    ("SS316L pod fabrication, hatch, skid, pressure-test buffer", "$12,000"),
    ("Internal frame, rails, machining changes, mounts", "$10,000"),
    ("Penetrators, cable glands, sealed power/data feedthroughs", "$18,000"),
    ("Closed-loop liquid cooling: cold plates, pump, reservoir, tubing, fittings, coolant", "$22,000"),
    ("Water-side heat rejection / exchanger / hull interface", "$18,000"),
    ("Sensors, telemetry, leak detection, shutdown controller", "$12,000"),
    ("Nitrogen purge/backfill kit, regulator, relief valve, dry-gas circulation fan, desiccant cartridge", "$5,000"),
    ("Shore power distribution, breakers, cabling, UPS/test power", "$14,000"),
    ("Networking, fiber/media converters, secure remote access setup", "$6,000"),
    ("GPU server chassis, CPU, RAM, NVMe, PSU, NICs", "$30,000"),
    ("3x H100-class PCIe GPUs, estimated $35k each", "$105,000"),
    ("Test site/tank/pool access, lifting and retrieval hardware", "$12,000"),
    ("Shipping, import/export, local logistics, spare seals, spare fittings", "$16,000"),
    ("Integration labor, assembly, wiring, seal cycles, debugging", "$25,000"),
    ("Contingency buffer", "$25,000"),
    ("Total full 3x H100-class V0 prototype", "$330,000"),
]

SUMMARY = [
    ("Pod, cooling, power, telemetry, nitrogen dry-atmosphere system, test, logistics, integration", "$170,000"),
    ("GPU server excluding GPUs", "$30,000"),
    ("3x H100-class GPUs", "$105,000"),
    ("Contingency buffer", "$25,000"),
    ("Total", "$330,000"),
]


def make_table(rows, widths):
    data = [["Item", "Budget"]] + [[Paragraph(item, TABLE_TEXT), amount] for item, amount in rows]
    table = Table(data, colWidths=widths, repeatRows=1)
    table.setStyle(
        TableStyle(
            [
                ("BACKGROUND", (0, 0), (-1, 0), colors.HexColor("#0F172A")),
                ("TEXTCOLOR", (0, 0), (-1, 0), colors.white),
                ("FONTNAME", (0, 0), (-1, 0), "Helvetica-Bold"),
                ("FONTNAME", (1, 1), (1, -1), "Helvetica-Bold"),
                ("FONTSIZE", (0, 0), (-1, -1), 8.2),
                ("GRID", (0, 0), (-1, -1), 0.25, colors.HexColor("#CBD5E1")),
                ("VALIGN", (0, 0), (-1, -1), "TOP"),
                ("ALIGN", (1, 1), (1, -1), "RIGHT"),
                ("ROWBACKGROUNDS", (0, 1), (-1, -2), [colors.white, colors.HexColor("#F8FAFC")]),
                ("BACKGROUND", (0, -1), (-1, -1), colors.HexColor("#ECFEFF")),
                ("TEXTCOLOR", (0, -1), (-1, -1), colors.HexColor("#0E7490")),
                ("LEFTPADDING", (0, 0), (-1, -1), 6),
                ("RIGHTPADDING", (0, 0), (-1, -1), 6),
                ("TOPPADDING", (0, 0), (-1, -1), 4),
                ("BOTTOMPADDING", (0, 0), (-1, -1), 4),
            ]
        )
    )
    return table


def add_bullets(story, items):
    for item in items:
        story.append(Paragraph(f"- {item}", BODY))


def build():
    doc = SimpleDocTemplate(
        str(OUT),
        pagesize=LETTER,
        rightMargin=0.62 * inch,
        leftMargin=0.62 * inch,
        topMargin=0.55 * inch,
        bottomMargin=0.55 * inch,
        title="Subsea Compute V0 Prototype Budget",
        author="Subsea Compute",
    )

    story = [
        Paragraph("Subsea Compute V0 Prototype Budget", TITLE),
        Paragraph("Dollar-only budget | May 7, 2026", SUBTITLE),
        Paragraph("<b>Clean number: $330,000 total.</b>", CALLOUT),
        Paragraph(
            "This is the complete budget for a US/coastal controlled-water V0: sealed pod, cooling, power, networking, telemetry, test/retrieval setup, compute server, and 3x H100-class GPUs.",
            BODY,
        ),
        Paragraph("Budget Breakdown", H),
        make_table(BREAKDOWN, [5.05 * inch, 1.22 * inch]),
        Spacer(1, 8),
        Paragraph("Simple Summary", H),
        make_table(SUMMARY, [5.05 * inch, 1.22 * inch]),
        Spacer(1, 8),
        Paragraph("Optional First Build", H),
        Paragraph(
            "<b>$100,000 first engineering build:</b> proves pod, seals, nitrogen dry-atmosphere system, cooling loop, telemetry, retrieval, and dummy thermal load before installing expensive H100 GPUs. This is not the full 3x H100 prototype.",
            BODY,
        ),
        Paragraph("Current Proof Points", H),
    ]

    add_bullets(
        story,
        [
            "Supplier GA/CAD and techno-commercial fabrication quote received.",
            "First pod architecture defined around retrieve-to-service operation.",
            "Thermal direction: closed-loop liquid cooling plus water-side heat rejection.",
            "TensorDock is open to evaluating capacity if reliability is proven.",
            "Seabase.ai call scheduled around prototype funding / US build direction.",
            "University of Houston technical review started.",
        ],
    )

    story.extend(
        [
            Paragraph("Investor Framing", H),
            Paragraph(
                "<b>The full 3x H100-class V0 prototype is budgeted at $330k.</b> The smaller first-check path is $100k to build and test the non-H100 engineering pod before risking GPUs.",
                BODY,
            ),
            Paragraph("Next Milestone", H),
            Paragraph(
                "30-day controlled-water proof: no leaks, stable thermals, remote monitoring, controlled shutdown behavior, successful retrieval/inspection, and clear requirements for GPU operator evaluation.",
                BODY,
            ),
        ]
    )

    doc.build(story)


styles = getSampleStyleSheet()
TITLE = ParagraphStyle(
    "TitleCustom",
    parent=styles["Title"],
    alignment=TA_CENTER,
    fontName="Helvetica-Bold",
    fontSize=21,
    leading=25,
    textColor=colors.HexColor("#0F172A"),
    spaceAfter=5,
)
SUBTITLE = ParagraphStyle(
    "Subtitle",
    parent=styles["BodyText"],
    alignment=TA_CENTER,
    fontSize=9.5,
    leading=12,
    textColor=colors.HexColor("#475569"),
    spaceAfter=10,
)
H = ParagraphStyle(
    "Heading",
    parent=styles["Heading2"],
    fontName="Helvetica-Bold",
    fontSize=11.5,
    leading=14,
    textColor=colors.HexColor("#0F172A"),
    spaceBefore=9,
    spaceAfter=5,
)
BODY = ParagraphStyle(
    "Body",
    parent=styles["BodyText"],
    fontSize=8.9,
    leading=12,
    textColor=colors.HexColor("#1E293B"),
    spaceAfter=4,
)
TABLE_TEXT = ParagraphStyle(
    "TableText",
    parent=BODY,
    fontSize=8.2,
    leading=10,
    spaceAfter=0,
)
CALLOUT = ParagraphStyle(
    "Callout",
    parent=BODY,
    alignment=TA_CENTER,
    backColor=colors.HexColor("#ECFEFF"),
    borderColor=colors.HexColor("#06B6D4"),
    borderWidth=0.8,
    borderPadding=7,
    fontName="Helvetica-Bold",
    fontSize=14,
    leading=17,
    textColor=colors.HexColor("#0E7490"),
    spaceBefore=2,
    spaceAfter=8,
)


if __name__ == "__main__":
    build()