// Central knobs for the party player.

export const PORT = Number(process.env.PORT) || 3000;

// Seconds of overlap between the outgoing and incoming video.
// Audio and video crossfade over this whole window.
export const OVERLAP_SECONDS = 5;

// How fast the player switches when the user jumps around manually.
export const HARD_CUT_SECONDS = 0.4;

// The video frame takes up this fraction of the screen. Keep this below 0.5:
// the corners animation puts a frame-sized image in all four corners, which
// only stays overlap-free while two frames fit side by side.
export const FRAME_SCALE = 0.35;

// Pixels per second the frame drifts across the screen.
export const BOUNCE_SPEED = 120;

// The corners animation: seconds between screenshots.
export const CORNER_INTERVAL_SECONDS = 4;

// Gap between the frame and the screen edge, as a fraction of the short side.
export const CORNER_MARGIN = 0.025;

// The drag animation gets its own, roomier base size: it is the only thing on
// screen while it runs, so it does not have to leave space for a second frame.
export const DRAG_FRAME_SCALE = 0.6;

// The drag animation resizes the frame to somewhere between these multiples of
// its base size. Above 1 the frame grows past DRAG_FRAME_SCALE, which is
// fine — nothing else is on screen while this animation runs.
export const DRAG_MIN_SCALE = 0.55;
export const DRAG_MAX_SCALE = 1.6;

// The trail animation: how fast the frame glides, and how sharply it may turn.
// The turn cap is what bends the path into an arc — without it the frame would
// snap onto each new heading and the tail would read as a dotted line.
export const TRAIL_SPEED = 150;
export const TRAIL_TURN_RATE = 0.7;

// Gap between two dropped stills, in frame widths, and how many the tail holds.
export const TRAIL_SPACING = 0.6;
export const TRAIL_LENGTH = 8;

// A still's life, from the moment it lands to fully faded.
export const TRAIL_FADE_SECONDS = 8;

// The colour wash: seconds for one full trip round the colour wheel. Slow
// enough that the screen never looks like it is flashing — the colour should
// only be obviously different once you look away and back.
export const WASH_CYCLE_SECONDS = 90;

// How far apart the two ends of the wash gradient sit on the wheel, in degrees,
// and how strongly the wash tints the poster underneath it.
export const WASH_SPREAD = 70;
export const WASH_STRENGTH = 0.55;

// The wash animation gets its own, roomier frame: like the drag animation it
// has the screen to itself, so it does not have to leave room for a second one.
export const WASH_FRAME_SCALE = 0.6;

// The frame animations, keyed by the id sent over the socket. The names must
// match the registry in public/player/motion.js, which supplies the code.
export const ANIMATIONS = {
  bounce: { label: 'Bounce' },
  corners: { label: 'Corners' },
  drag: { label: 'Drag & resize' },
  trail: { label: 'Comet trail' },
  wash: { label: 'Colour wash' },
};

// Cycle a fresh random animation on every track change. Anything else pins the
// player to that one animation, which is what the queue page's buttons are for.
export const AUTO_ANIMATION = 'auto';
export const DEFAULT_ANIMATION = AUTO_ANIMATION;

// Selectable fullscreen backgrounds, keyed by the id sent over the socket.
export const BACKGROUNDS = {
  pink: { label: 'Pink', src: '/assets/PLAKAT_A2_pink_426x600mm.png' },
  plain: { label: 'Classic', src: '/assets/PLAKAT_A2_426x600mm.png' },
};

export const DEFAULT_BACKGROUND = 'pink';