// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

.pragma library

// The wallpapers the companion blushes at, as a plain text file: one
// absolute path per line, blank lines and lines starting with # skipped.
// Pure, so test_mood.js drives it; Admired.qml reads and writes the file.

function parse(text) {
    const out = [];
    for (const l of text.split("\n")) {
        const p = l.trim();
        if (p !== "" && p[0] !== "#") out.push(p);
    }
    return out;
}

// text with path's line removed if it is listed, else appended. Comments
// and every other line stay as they are.
function toggle(text, path) {
    const lines = text === "" ? [] : text.replace(/\n$/, "").split("\n");
    const kept = lines.filter(l => l.trim() !== path);
    if (kept.length === lines.length) kept.push(path);
    return kept.length ? kept.join("\n") + "\n" : "";
}

// wallp.conf's OUTPUT_H and OUTPUT_V, as { connector: "H" | "V" }. An exec
// loop, because QML's engine has no String.matchAll.
function outputs(conf) {
    const out = {};
    const re = /^\s*OUTPUT_([HV])\s*=\s*(\S+)/gm;
    let m;
    while ((m = re.exec(conf)) !== null) out[m[2]] = m[1];
    return out;
}