/*
DESCRIPTION
  gvctrl_test.go provides tests of functionality in the gvctrl package.

AUTHORS
  Saxon A. Nelson-Milton <saxon@ausocean.org>

LICENSE
  Copyright (C) 2019 the Australian Ocean Lab (AusOcean)

  It is free software: you can redistribute it and/or modify them
  under the terms of the GNU General Public License as published by the
  Free Software Foundation, either version 3 of the License, or (at your
  option) any later version.

  It is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  for more details.

  You should have received a copy of the GNU General Public License
  in gpl.txt.  If not, see http://www.gnu.org/licenses.
*/

package gvctrl

import (
	"errors"
	"net/url"
	"reflect"
	"testing"
)

func TestClosestValIdx(t *testing.T) {
	tests := []struct {
		l    []int
		v    int
		want int
	}{
		{
			l:    []int{2, 5, 8, 11, 14},
			v:    6,
			want: 1,
		},
		{
			l:    []int{2, 5, 8, 11, 14},
			v:    12,
			want: 3,
		},
		{
			l:    []int{2, 5, 8, 11, 14},
			v:    13,
			want: 4,
		},
		{
			l:    []int{2, 5, 8, 11, 14},
			v:    0,
			want: 0,
		},
		{
			l:    []int{2, 5, 8, 11, 14},
			v:    17,
			want: 4,
		},
		{
			l:    []int{2, 5, 8, 11, 15},
			v:    13,
			want: 3,
		},
		{
			l:    []int{},
			v:    17,
			want: 0,
		},
	}

	for i, test := range tests {
		got := closestValIdx(test.v, test.l)
		if got != test.want {
			t.Errorf("did not get expected result for test: %d\nGot: %v\nWant: %v", i, got, test.want)
		}
	}
}

func TestConvRate(t *testing.T) {
	tests := []struct {
		l    []int
		v    int
		want string
	}{
		{
			l:    []int{512, 1024, 2048, 3072},
			v:    1400,
			want: "1024000",
		},
		{
			l:    []int{512, 1024, 2048, 3072},
			v:    1900,
			want: "2048000",
		},
		{
			l:    []int{512, 1024, 2048, 3072},
			v:    4000,
			want: "3072000",
		},
	}

	for i, test := range tests {
		got := convRate(test.v, test.l)
		if got != test.want {
			t.Errorf("did not get expected result for test: %d\nGot: %v\nWant: %v", i, got, test.want)
		}
	}
}

func TestHeight(t *testing.T) {
	tests := []struct {
		h    int
		want settings
		err  error
	}{
		{
			h:    256,
			want: settings{res: "4480256"},
		},
		{
			h:    360,
			want: settings{res: "6400360"},
		},
		{
			h:    720,
			want: settings{res: "12800720"},
		},
		{
			h:    500,
			want: settings{},
			err:  errors.New(""),
		},
	}

	for i, test := range tests {
		s := settings{}
		got, err := Height(test.h)(s)
		if test.err == nil && err != nil || test.err != nil && err == nil {
			t.Errorf("did not get expected error: %v", test.err)
		}

		if got != test.want {
			t.Errorf("did not get expected result for test: %d\nGot: %v\nWant: %v", i, got, test.want)
		}
	}
}

func TestVBRBitrate(t *testing.T) {
	tests := []struct {
		r    int
		in   settings
		want settings
	}{
		{
			r:  300,
			in: settings{vbr: "1"},
			want: settings{
				vbr:        "1",
				vbrBitRate: "250000",
			},
		},
		{
			r:  400,
			in: settings{vbr: "1"},
			want: settings{
				vbr:        "1",
				vbrBitRate: "500000",
			},
		},
	}

	for i, test := range tests {
		got, _ := VBRBitRate(test.r)(test.in)
		if got != test.want {
			t.Errorf("did not get expected result for test: %d\nGot: %v\nWant: %v", i, got, test.want)
		}
	}
}

func TestCBRBitrate(t *testing.T) {
	tests := []struct {
		r    int
		in   settings
		want settings
	}{
		{
			r: 600,
			in: settings{
				vbr: "0",
				res: res256,
			},
			want: settings{
				vbr:        "0",
				res:        res256,
				cbrBitRate: "512000",
			},
		},
		{
			r: 100,
			in: settings{
				vbr: "0",
				res: res256,
			},
			want: settings{
				vbr:        "0",
				res:        res256,
				cbrBitRate: "128000",
			},
		},
		{
			r: 2048,
			in: settings{
				vbr: "0",
				res: res360,
			},
			want: settings{
				vbr:        "0",
				res:        res360,
				cbrBitRate: "2048000",
			},
		},
		{
			r: 500,
			in: settings{
				vbr: "0",
				res: res720,
			},
			want: settings{
				vbr:        "0",
				res:        res720,
				cbrBitRate: "1024000",
			},
		},
	}

	for i, test := range tests {
		got, _ := CBRBitRate(test.r)(test.in)
		if got != test.want {
			t.Errorf("did not get expected result for test: %d\nGot: %v\nWant: %v", i, got, test.want)
		}
	}
}

func TestRefresh(t *testing.T) {
	tests := []struct {
		r    float64
		want settings
		err  error
	}{
		{
			r:    1.6,
			want: settings{refresh: "1500"},
		},
		{
			r:    2.4,
			want: settings{refresh: "2500"},
		},
		{
			r:    0,
			want: settings{},
			err:  errors.New(""),
		},
		{
			r:    6,
			want: settings{},
			err:  errors.New(""),
		},
	}

	for i, test := range tests {
		s := settings{}
		got, err := Refresh(test.r)(s)
		if test.err == nil && err != nil || test.err != nil && err == nil {
			t.Errorf("did not get expected error: %v", test.err)
		}

		if got != test.want {
			t.Errorf("did not get expected result for test: %d\nGot: %v\nWant: %v", i, got, test.want)
		}
	}
}

func TestPopulateForm(t *testing.T) {
	tests := []struct {
		in   settings
		want string
	}{
		{
			in:   newSettings(),
			want: "dwConnType=5&mpeg_type=10&dwflicker_hz=0&szResolution=6400360&dwFrameRate=25000&vbr_enable=0&max_bit_rate=512000&custom_rate_control_type=0&custom_bitrate=0&custom_qp_init=25&custom_qp_min=10&custom_qp_max=40&gop_N=2000&dwEncProfile=1&dwEncLevel=31&dwEntropy=0&u8PreAlarmBuf=1&u32PostAlarmBuf2Disk=1&u8SplitInterval=5&bEnableIO=1&bEbIoIn=1&bEbIoIn1=1&bOSDFontSize=0&bEnableOSDCameraName=1&bCamNamePos=2&bEnableOSDDate=1&bDatePos=2&bEnableOSDTime=1&bTimePos=2&szOsdCamName=Camera&u16PostAlarmBuf=1&dwCameraId=1&LangCode=undefined&Recflag=0&submit=Apply",
		},
		{
			in: settings{
				codec:      CodecH265,
				res:        defaultRes,
				frameRate:  defaultFrameRate,
				vbr:        defaultVBR,
				quality:    defaultQuality,
				vbrBitRate: defaultVBRBitRate,
				cbrBitRate: defaultCBRBitRate,
				refresh:    defaultRefresh,
			},
			want: "dwConnType=5&mpeg_type=28&dwflicker_hz=0&szResolution=6400360&dwFrameRate=25000&vbr_enable=0&max_bit_rate=512000&custom_rate_control_type=0&custom_bitrate=0&custom_qp_init=25&custom_qp_min=10&custom_qp_max=40&gop_N=2000&dwEncProfile=1&dwEncLevel=31&dwEntropy=0&u8PreAlarmBuf=1&u32PostAlarmBuf2Disk=1&u8SplitInterval=5&bEnableIO=1&bEbIoIn=1&bEbIoIn1=1&bOSDFontSize=0&bEnableOSDCameraName=1&bCamNamePos=2&bEnableOSDDate=1&bDatePos=2&bEnableOSDTime=1&bTimePos=2&szOsdCamName=Camera&u16PostAlarmBuf=1&dwCameraId=1&LangCode=undefined&Recflag=0&submit=Apply",
		},
		{
			in: settings{
				codec:      CodecMJPEG,
				res:        defaultRes,
				frameRate:  defaultFrameRate,
				vbr:        defaultVBR,
				quality:    defaultQuality,
				vbrBitRate: defaultVBRBitRate,
				cbrBitRate: defaultCBRBitRate,
				refresh:    defaultRefresh,
			},
			want: "dwConnType=5&mpeg_type=4&dwflicker_hz=0&szResolution=6400360&dwFrameRate=25000&vbr_enable=1&dwVbrQuality=2&vbrmaxbitrate=500000&custom_qp_init=25&gop_N=1500&u8PreAlarmBuf=1&u32PostAlarmBuf2Disk=1&u8SplitInterval=5&bEnableIO=1&bEbIoIn=1&bEbIoIn1=1&bOSDFontSize=0&bEnableOSDCameraName=1&bCamNamePos=2&bEnableOSDDate=1&bDatePos=2&bEnableOSDTime=1&bTimePos=2&szOsdCamName=Camera&u16PostAlarmBuf=1&dwCameraId=1&LangCode=undefined&Recflag=0&submit=Apply",
		},
		{
			in: settings{
				codec:      CodecH264,
				res:        defaultRes,
				frameRate:  defaultFrameRate,
				vbr:        "1",
				quality:    defaultQuality,
				vbrBitRate: defaultVBRBitRate,
				cbrBitRate: defaultCBRBitRate,
				refresh:    defaultRefresh,
			},
			want: "dwConnType=5&mpeg_type=10&dwflicker_hz=0&szResolution=6400360&dwFrameRate=25000&vbr_enable=1&dwVbrQuality=2&vbrmaxbitrate=250000&custom_rate_control_type=0&custom_bitrate=0&custom_qp_init=25&custom_qp_min=10&custom_qp_max=40&gop_N=2000&dwEncProfile=1&dwEncLevel=31&dwEntropy=0&u8PreAlarmBuf=1&u32PostAlarmBuf2Disk=1&u8SplitInterval=5&bEnableIO=1&bEbIoIn=1&bEbIoIn1=1&bOSDFontSize=0&bEnableOSDCameraName=1&bCamNamePos=2&bEnableOSDDate=1&bDatePos=2&bEnableOSDTime=1&bTimePos=2&szOsdCamName=Camera&u16PostAlarmBuf=1&dwCameraId=1&LangCode=undefined&Recflag=0&submit=Apply",
		},
	}

	for i, test := range tests {
		got := populateForm(test.in)
		want, err := url.ParseQuery(test.want)
		if err != nil {
			t.Fatalf("should not have got error: %v parsing want string for test: %d", err, i)
		}

		if !reflect.DeepEqual(got, want) {
			t.Errorf("did not get expected result for test: %d\nGot: %v\nWant: %v", i, got, want)
		}
	}
}