//Standard lib

//Third party
#include "raylib.h"

//Our own files
#include "constants.h"
#include "programstate.h"
#include "drawhelper.h"
#include "draw_xports_ypitches.h"

/* Each port is a column, ordered from left to right
 * Each pitch is a rectangle in that column. midi note 0 on the bottom to 127 on top
 * The screen does not move or scroll. Notes fade out and make room for the next note-on.
 */

extern ProgramState programState;

static Rectangle backgroundRects[VIS_PORTS]; // 4 floats: x, y, w, h

static void reposition(Note *allGUINotes) {
    //This is both init and update. We only call it internally, the name of the function doesn't matter.
    //Once guaranteed called on program start and then each window resize
    int screenWidth = GetScreenWidth();
    int screenHeight = GetScreenHeight();
    int xOffset = (int)(screenWidth/2) - (int)((VIS_PORTS*NOTE_LONG_SIDE)/2);
    //int yOffset = -1 *  ((int)(screenWidth/2) - ((programState.pitchMax - programState.pitchMin +1 ) * NOTE_SMALL_SIDE))/2;
    int yOffset = -1 * ((int)(screenHeight/2) - (60 * NOTE_SMALL_SIDE)/2); //we want all tracks around the center.

    programState.modeDescription = "Each port is a vertical column.\n\
Each pitch is one square, going from top highest\nto bottomw lowest.\n\
\n\
The higher the velocity of a note the more\nvibrant its color.\n\
\n\
Notes are only lit up when they are played.\n\
There is no time-dimension.";

    for (int port=0; port<VIS_PORTS; port++) {
        backgroundRects[port].x = xOffset + port*(NOTE_LONG_SIDE + NOTE_GAP) - NOTE_GAP/2;
        backgroundRects[port].y = yOffset + (127-programState.pitchMax) * NOTE_SMALL_SIDE;
        backgroundRects[port].width = (float)NOTE_LONG_SIDE;
        backgroundRects[port].height = (programState.pitchMax - programState.pitchMin +1 ) * NOTE_SMALL_SIDE;

        for (int midiPitch=0; midiPitch<128; midiPitch++) { //We prepare the full range of pitches, but the main loop will only activate the current pitch range.
            allGUINotes[port*128 + midiPitch].x = xOffset + port*(NOTE_LONG_SIDE + NOTE_GAP);
            allGUINotes[port*128 + midiPitch].y = yOffset + (127-midiPitch) * NOTE_SMALL_SIDE ;
        }
    }
}

static void drawBackground() {
    //Each port is one track
    //The background rects already have their positions and dimensions set.
    if (programState.showPortBackground) {
        for (int port=0; port<VIS_PORTS; port++) {
            if (portShouldDraw(port)) {
                DrawRectangleRec(backgroundRects[port], programState.colors[backgroundLight]);
            }
        }
    }
}

void draw_xports_ypitches(Note *allGUINotes, int redrawNeeded) {
    Note * nt;
    float ft = GetFrameTime();

    if (redrawNeeded) {
        reposition(allGUINotes);
    }

    //Z-Order is created by call-order. First is bottom.
    drawBackground();


    if (programState.showConnectedPortnames) {
        for (int port=0; port<VIS_PORTS; port++) {
            nt = &allGUINotes[port*128+programState.pitchMin]; // bottom left note of each port
            drawJackPortName(programState.connectedPortNames[port], nt->x, nt->y+20, 18, RAYWHITE, true); //text, x, y, int fontsize, color, vertical
        }
    }

    if (programState.showPitchMarker) {
        for (int port=0; port<VIS_PORTS; port++) {
            if (portShouldDraw(port)) {
                nt = &allGUINotes[port*128 + programState.pitchMarkerValue];
                Rectangle rec = (Rectangle){nt->x, nt->y, NOTE_LONG_SIDE-NOTE_BORDER, NOTE_SMALL_SIDE-NOTE_BORDER};
                DrawRectangleRounded(rec, 0.5, 8, programState.colors[backgroundLighter]);
            }
        }
    }


    for (int port=0; port<VIS_PORTS; port++) {
        for (int midiPitch=programState.pitchMin; midiPitch<=programState.pitchMax; midiPitch++) {
            nt = &allGUINotes[port*128 + midiPitch];
            if (nt->active) {
                reduceCountdown(nt, ft); //handles 0.0 and 1.0 as special cases
                drawNoteRect(nt, 1, 0); //note, rotated, square. Will not draw if countdown == 0
            }

        }
    }
}