import pygame
from colors import *
from fonts import *
from knob import *

class Knobs:

    def __init__(self, gui):

        self.gui = gui

        knob_names = [
            'Delay Time',
            'Delay Vol',
            'Reverb Wet',
            'Reverb Size',
            'Filter Freq',
            'Distortion',
            'Detune',
            'Gain'
        ]

        # Create and position the knobs
        self.knobs_radius = self.gui.screenW / 25
        knobs_spacing = self.knobs_radius * 2
        knobs_x = (self.gui.screenW - (self.knobs_radius + knobs_spacing) * 2) / 2
        x = knobs_x
        knobs_y = (self.gui.screenH - (self.knobs_radius + knobs_spacing) * 3) / 2
        y = knobs_y
        self.knobs = []
        for i in range(8):
            self.knobs.append(Knob(self, knob_names[i], self.knobs_radius, (x, y)))
            y += self.knobs_radius + knobs_spacing
            if i == 3 or i == 6:
                x += self.knobs_radius + knobs_spacing
                y = knobs_y

    def display_label(self, knob):
        label_fx_name = font_helvetica.render(knob.name, False, color_primary_light)
        label_fx_value = font_helvetica.render('[ ' + str(knob.value) + '% ]',
                                        False, color_primary_light)

        label_x = self.gui.screenW - label_fx_name.get_width() - 20
        label_y = (self.gui.screenH - label_fx_name.get_height() - label_fx_value.get_height()) / 2
        self.gui.screen.blit(label_fx_name, (label_x, label_y))
        self.gui.screen.blit(label_fx_value, (label_x, self.gui.screenH / 2))
        pygame.draw.line(self.gui.screen, color_primary_dark, (label_x - 10, label_y), (label_x - 10, self.gui.screenH - label_y), 2)
        
        line_points = []
        line_points.append(knob.get_position())

        if (knob == self.knobs[0] or knob == self.knobs[1] or
            knob == self.knobs[4] or knob == self.knobs[5]):
            x = knob.get_position()[0] + self.knobs_radius * 1.5
            y = knob.get_position()[1] + self.knobs_radius * 1.5
            line_points.append((x, y))
        elif (knob == self.knobs[2] or knob == self.knobs[3] or knob == self.knobs[6]):
            x = knob.get_position()[0] + self.knobs_radius * 1.5
            y = knob.get_position()[1] - self.knobs_radius * 1.5
            line_points.append((x, y))
        elif (knob == self.knobs[7]):
            x = knob.get_position()[0] - self.knobs_radius * 1.5
            y = knob.get_position()[1] + self.knobs_radius * 1.5
            line_points.append((x, y))

        if (knob == self.knobs[0] or knob == self.knobs[3]):
            line_points.append((self.knobs[0].get_position()[0] + self.knobs_radius * 1.5, self.gui.screenH/2))
        elif (knob == self.knobs[4] or knob == self.knobs[6] or knob == self.knobs[7]):
            line_points.append((self.knobs[4].get_position()[0] + self.knobs_radius * 1.5, self.gui.screenH/2))

        line_points.append((label_x - 10, self.gui.screenH/2))

        for i in range(len(line_points)-1):
            pygame.draw.line(self.gui.screen, color_primary_dark, line_points[i], line_points[i+1], 2)

    def deactivate_knobs_except(self, knob):
        for k in self.knobs:
            if k != knob: k.set_focused(False)

    def display(self):
        for knob in self.knobs:
            if knob.focused: self.display_label(knob)
            knob.display(self.gui.screen)