#!/bin/bash
# Central theme drift guard (basic/.config/themes/scripts/sync-theme.sh).
#
# Fails if hardcoded theme hex values appear anywhere in the repo outside:
#   - basic/.config/themes            (the single source of truth)
#   - term/.config/tmux/plugins/      (vendored upstream, stow-ignored)
#   - term/.config/yazi/theme.toml    (declared mirror: yazi has no include)
#   - term/.config/starship.toml      (declared mirror: starship has no include)
#   - hypr/.config/rofi/themes/ltmnight.rasi  (declared mirror: rasi has no
#     alpha() function, so the two translucency values are #RRGGBBAA hex;
#     everything else maps onto the central theme via @import)
#   - test/ + docs                    (may quote values in prose)
#
# Run with: bash basic/.config/themes/scripts/sync-theme.sh
# test/lint.sh invokes it as part of `make test-lint`.

set -uo pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../../.." && pwd)"
cd "$REPO_ROOT" || exit 1

# Sentinel hex values of the active palette (case-insensitive).
SENTINELS='74c7ec|1e1e2e|cdd6f4|45475a|b4befe|f38ba8|a6e3a1|f9e2af|181825|11111b|89b4fa|f5e0dc'

matches="$(grep -rniE --include='*.conf' --include='*.css' --include='*.rasi' \
    --include='*.lua' --include='*.toml' --include='*.fish' --include='*.sh' \
    --exclude-dir='.git' --exclude-dir='plugins' --exclude-dir='test' \
    -E "$SENTINELS" . 2>/dev/null | grep -vE '^./basic/.config/themes' \
    | grep -vE 'term/.config/(yazi/theme.toml|starship.toml)' \
    | grep -vE 'hypr/.config/rofi/themes/ltmnight.rasi' || true)"

if [[ -n "$matches" ]]; then
    echo "FAIL: hardcoded theme colors outside basic/.config/themes (and declared mirrors):"
    printf '%s\n' "$matches" | sed 's/^/  /'
    echo "Move the values into basic/.config/themes and reference them instead."
    exit 1
fi

echo "ok: no hardcoded theme colors outside the central theme"

# ---------------------------------------------------------------------------
# Role/palette consistency: every role in theme.css must equal its palette
# twin (roles are literal hex because some parsers drop @-references).
# ---------------------------------------------------------------------------
python3 - <<'EOF'
import re, sys

css_path = "basic/.config/themes/themes/catppuccin-mocha/theme.css"
defines = dict(re.findall(r"@define-color\s+([a-z0-9_]+)\s+(#[0-9a-fA-F]+)", open(css_path).read()))

# role -> palette twin (bg_translucent intentionally excluded: crust + alpha).
pairs = {
    "bg": "base", "bg_dim": "mantle", "bg_deep": "crust",
    "fg": "text", "fg_dim": "subtext0", "fg_muted": "overlay1",
    "surface": "surface0", "border": "surface1",
    "accent": "sapphire", "accent2": "lavender",
    "ok": "green", "warn": "yellow", "urgent": "red",
}

missing = [k for k in list(pairs) + list(pairs.values()) if k not in defines]
if missing:
    print(f"FAIL: theme.css missing defines: {sorted(missing)}")
    sys.exit(1)

bad = [r for r, p in pairs.items() if defines[r].lower() != defines[p].lower()]
if bad:
    print(f"FAIL: roles out of sync with palette in {css_path}: {bad}")
    sys.exit(1)

trans = defines.get("bg_translucent_raw", "")
m = re.fullmatch(r"rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*([0-9.]+)\s*\)", trans)
if not m:
    # defines[] regex only captures #hex; re-read raw value (may be rgba()).
    raw = re.search(r"@define-color\s+bg_translucent\s+([^;]+);", open(css_path).read())
    trans = raw.group(1).strip() if raw else ""
    m = re.fullmatch(r"rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*([0-9.]+)\s*\)", trans)
crust_rgb = tuple(int(defines["crust"][i:i+2], 16) for i in (1, 3, 5))
if not m or tuple(map(int, m.groups()[:3])) != crust_rgb or not (0 < float(m.group(4)) < 1):
    print(f"FAIL: bg_translucent must be rgba(crust, alpha<1) in {css_path}")
    sys.exit(1)

print("ok: theme.css roles match palette")
EOF