# -*- coding: utf-8 -*-
"""D1 §10 Python emoji gate — Windows grep silently fails to match multibyte emoji (the D0
grep-gate zero was a false negative). This scans templates by Unicode codepoint.

Run from controller/:  python scripts/emoji_gate.py
Exit 1 if any emoji/pictograph remains in web+setup templates.
"""
import io, os, sys, unicodedata

ROOTS = [
    os.path.join("internal", "web", "templates"),
    os.path.join("internal", "setup", "templates"),
]

# Codepoint ranges that count as "emoji / pictographs / dingbats" for UI-copy purposes.
# Deliberately does NOT flag Hungarian letters, typographic quotes/dashes, the middle dot (·),
# arrows used as affordances (→ ↗ ↻ ↑ ↓), the multiplication sign (×), or box-drawing.
def is_emoji(ch):
    o = ord(ch)
    ranges = [
        (0x1F300, 0x1FAFF),  # Misc symbols & pictographs, emoticons, transport, supplemental, symbols-ext
        (0x2600, 0x26FF),    # Misc symbols (☀ ⚙ ⚠ ☁ …)
        (0x2700, 0x27BF),    # Dingbats (✅ ✂ ✈ ✏ ✓? no — see allow)
        (0x1F000, 0x1F0FF),  # Mahjong/dominoes/cards
        (0xFE00, 0xFE0F),    # Variation selectors (emoji presentation)
        (0x1F1E6, 0x1F1FF),  # Regional indicators
    ]
    if any(a <= o <= b for a, b in ranges):
        return True
    return False

# Dingbat codepoints that are legitimate UI glyphs (checkmarks/crosses used as plain text marks,
# not emoji). We keep these OUT of the ban — they render as monochrome text, not color emoji.
ALLOW = set("✓✗✔✘•●○■▶")  # ✓ ✗ ✔ ✘ • ● ○ ■ ▶


def scan(path):
    hits = []
    for lineno, line in enumerate(io.open(path, encoding="utf-8"), 1):
        for ch in line:
            if ch in ALLOW:
                continue
            if is_emoji(ch):
                try:
                    name = unicodedata.name(ch)
                except ValueError:
                    name = "U+%04X" % ord(ch)
                hits.append((lineno, ch, name))
    return hits


def main():
    total = 0
    for root in ROOTS:
        for fn in sorted(os.listdir(root)):
            if not fn.endswith(".html"):
                continue
            path = os.path.join(root, fn)
            for lineno, ch, name in scan(path):
                total += 1
                print("%s:%d  %s  %s" % (fn, lineno, ch, name))
    if total:
        print("EMOJI GATE FAILED: %d emoji found" % total)
        sys.exit(1)
    print("emoji gate OK — no emoji in web/setup templates")


if __name__ == "__main__":
    main()