#!/usr/bin/env python3
"""Genera le icone di harbour-aira (86/108/128/172 px) in icons/<size>/.

Disegno originale (nessun logo di terzi): sfondo blu sfumato, goccia bianca e
un punto caldo arancione — acqua calda + pompa di calore.
Uso: python3 scripts/make_icons.py
"""
from PIL import Image, ImageDraw

import pathlib

SIZES = [86, 108, 128, 172]
BASE = 172  # si disegna grande e si ridimensiona: bordi puliti a ogni taglia

TOP = (12, 62, 130)      # blu profondo
BOTTOM = (24, 148, 190)  # azzurro
WARM = (255, 138, 46)    # arancione


def rounded_mask(size, radius):
    m = Image.new("L", (size, size), 0)
    ImageDraw.Draw(m).rounded_rectangle([0, 0, size - 1, size - 1], radius=radius, fill=255)
    return m


def gradient(size):
    img = Image.new("RGB", (1, size))
    d = ImageDraw.Draw(img)
    for y in range(size):
        t = y / max(1, size - 1)
        d.point((0, y), tuple(int(TOP[i] + (BOTTOM[i] - TOP[i]) * t) for i in range(3)))
    return img.resize((size, size))


def draw_icon(size):
    img = gradient(size).convert("RGBA")
    d = ImageDraw.Draw(img)

    # goccia: cerchio + triangolo verso l'alto
    cx = size * 0.5
    cy = size * 0.60
    r = size * 0.19
    d.ellipse([cx - r, cy - r, cx + r, cy + r], fill=(255, 255, 255, 235))
    d.polygon([(cx, cy - 2.35 * r), (cx - r * 0.98, cy + r * 0.10), (cx + r * 0.98, cy + r * 0.10)],
              fill=(255, 255, 255, 235))
    # ricentra la goccia: il triangolo allunga verso l'alto
    shift = -size * 0.05
    img = img.transform(img.size, Image.AFFINE, (1, 0, 0, 0, 1, shift))

    d = ImageDraw.Draw(img)
    # punto caldo in basso a destra, dentro la goccia
    wr = size * 0.085
    wx, wy = cx + r * 0.10, cy + r * 0.30
    for i in range(int(wr), 0, -1):
        a = int(255 * (1 - i / wr) + 90)
        d.ellipse([wx - i, wy - i, wx + i, wy + i], fill=WARM + (a,))

    return img


def main():
    master = draw_icon(BASE)
    master.putalpha(rounded_mask(BASE, int(BASE * 0.22)))

    for s in SIZES:
        out = master.resize((s, s), Image.LANCZOS)
        outdir = pathlib.Path(f"icons/{s}x{s}")
        outdir.mkdir(parents=True, exist_ok=True)
        path = outdir / "harbour-aira.png"
        out.save(path)
        print("scritto", path)


if __name__ == "__main__":
    main()