const std = @import("std");
const print = std.debug.print;

pub const FreqAmpBuffer = struct {
	
	const buffer_ticks_default = 44100 * 2;
	
	buffer_ticks: u32 = buffer_ticks_default,
	current_tick: u32 = 0,
	current_index: u32 = 0,
	fal_array: [buffer_ticks_default]f64 = std.mem.zeroes([buffer_ticks_default]f64),
		

	pub fn increment_tick(self: *FreqAmpBuffer) void {

		self.current_tick += 1;
		
		const cur_index = self.index_by_tick(self.current_tick);
		self.current_index = cur_index;
		
		self.fal_array[cur_index] = 0;
	
	}

	pub fn index_by_tick(self: *FreqAmpBuffer, tick: u32) u32 {
		return tick % self.buffer_ticks;
	}

	pub fn prnt(self: *FreqAmpBuffer) void {
		
		print("CURRENT STATE:\n", .{});
		
		const prev_index = self.index_by_tick(self.current_tick-%1);
		const cur_index = self.current_index;
		const next_index = self.index_by_tick(self.current_tick+%1);
		
		print("{d}: {*}\n", .{self.current_tick-%1, self.fal_array[prev_index]});
		print("{d}\n", .{self.fal_array[prev_index]});
		print("{d}: {*}\n", .{self.current_tick, self.fal_array[cur_index]});
		print("{d}\n", .{self.fal_array[cur_index]});
		print("{d}: {*}\n", .{self.current_tick+%1, self.fal_array[next_index]});
		print("{d}\n", .{self.fal_array[next_index]});
		
	}


	pub fn add_r_amp(self: *FreqAmpBuffer, r_amp: f64) void {

		self.fal_array[self.current_index] += r_amp;
		
		if (self.fal_array[self.current_index] > 1) {
			self.fal_array[self.current_index] = 1;
		} else if (self.fal_array[self.current_index] < -1) {
			self.fal_array[self.current_index] = -1;
		}
	}

	pub fn get_current_r_amp(self: *FreqAmpBuffer) f64 {
	
		return self.fal_array[self.current_index];
		
	}
	
	pub fn get_r_amp(self: *FreqAmpBuffer, tick: u32) f64 {
		const ind: u32 = self.index_by_tick(tick);
		return self.fal_array[ind];
		
	}

};