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// brightness.test.js — node test for the pure brightness module. Prints ALL PASS.
var assert = require('assert');
var B = require('./brightness.js');

// clampLevel: range + null/NaN safety
assert.strictEqual(B.clampLevel(-1), 0);
assert.strictEqual(B.clampLevel(2), 1);
assert.strictEqual(B.clampLevel(0.5), 0.5);
assert.strictEqual(B.clampLevel(null), 0);
assert.strictEqual(B.clampLevel(undefined), 0);
assert.strictEqual(B.clampLevel("0.3"), 0.3);

// levelPercent: rounded integer percent
assert.strictEqual(B.levelPercent(0), 0);
assert.strictEqual(B.levelPercent(0.5), 50);
assert.strictEqual(B.levelPercent(1), 100);
assert.strictEqual(B.levelPercent(2), 100);
assert.strictEqual(B.levelPercent(0.014), 1);

// levelRole: band boundaries (<=0.15 minor, >=0.85 warning, else accent)
assert.strictEqual(B.levelRole(0.10), "ui.minor");
assert.strictEqual(B.levelRole(0.15), "ui.minor");   // inclusive low boundary
assert.strictEqual(B.levelRole(0.16), "ui.accent");
assert.strictEqual(B.levelRole(0.5), "ui.accent");
assert.strictEqual(B.levelRole(0.84), "ui.accent");
assert.strictEqual(B.levelRole(0.85), "warning");    // inclusive high boundary
assert.strictEqual(B.levelRole(1), "warning");
assert.strictEqual(B.levelRole(null), "ui.minor");   // 0 -> dim

// displayRows: no fake built-in; unresolved external outputs get issue badges
assert.deepStrictEqual(B.displayRows({ present: false, level: 0.55 }, {
    "DP-1": { model: "27E6QC" },
    "DP-2": { model: "27E6QC" }
}, {}), [
    { id: "ddc:DP-1", name: "DP-1 · 27E6QC", kind: "ddc", level: 0, controllable: false, issue: "DDC?" },
    { id: "ddc:DP-2", name: "DP-2 · 27E6QC", kind: "ddc", level: 0, controllable: false, issue: "DDC?" }
]);

assert.deepStrictEqual(B.displayRows({ present: true, level: 0.55 }, {}, {}), [
    { id: "backlight", name: "built-in", kind: "backlight", level: 0.55, controllable: true, issue: "" }
]);

assert.deepStrictEqual(B.displayRows({ present: true, level: 0.75 }, [
    { name: "DP-1", model: "27E6QC" }
], { "DP-1": { level: 0.25, controllable: true } }), [
    { id: "backlight", name: "built-in", kind: "backlight", level: 0.75, controllable: true, issue: "" },
    { id: "ddc:DP-1", name: "DP-1 · 27E6QC", kind: "ddc", level: 0.25, controllable: true, issue: "" }
]);

// Internal panels never become DDC candidates, even without an available backlight.
for (const connector of ['LVDS-1', 'eDP-1', 'DSI-1', 'eDP-2']) {
    const outputs = [{ name: connector, model: 'internal panel' }];
    const ddc = { [connector]: { controllable: true, level: 0.25 } };
    assert.deepStrictEqual(B.displayRows({ present: true, level: 0.5 }, outputs, ddc), [
        { id: 'backlight', name: 'built-in', kind: 'backlight', level: 0.5, controllable: true, issue: '' }
    ]);
    assert.deepStrictEqual(B.displayRows({ present: false }, outputs, ddc), []);
}

// Docked laptops retain external DDC candidates in either output representation.
const dockedOutputs = { 'LVDS-1': { model: 'internal' }, 'HDMI-A-1': { model: 'external' } };
const dockedRows = B.displayRows({ present: true, level: 0.5 }, dockedOutputs, {});
assert.deepStrictEqual(dockedRows.map(row => row.id), ['backlight', 'ddc:HDMI-A-1']);
assert.strictEqual(dockedRows[1].issue, 'DDC?');

// globalState: none/synced/mixed from controllable displays only
assert.deepStrictEqual(B.globalState([]), { mode: "none", level: 0, levels: [] });
assert.deepStrictEqual(B.globalState([{ controllable: false, level: 0.2 }]), { mode: "none", level: 0, levels: [] });
assert.deepStrictEqual(B.globalState([{ controllable: true, level: 0.5 }, { controllable: true, level: 0.5 }]), { mode: "synced", level: 0.5, levels: [0.5, 0.5] });
assert.deepStrictEqual(B.globalState([{ controllable: true, level: 0.75 }, { controllable: true, level: 0.25 }]), { mode: "mixed", level: 0.5, levels: [0.75, 0.25] });

console.log('brightness.test.js: ALL PASS');