//Calendar implementation for the HTWK Leipzig timetable. Evaluation and display of the individual dates in iCal format.
//Copyright (C) 2024 HTWKalender support@htwkalender.de

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

//This program 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 Affero General Public License for more details.

//You should have received a copy of the GNU Affero General Public License
//along with this program.  If not, see <https://www.gnu.org/licenses/>.

package v1

import (
	"fmt"
	"github.com/pocketbase/pocketbase/tools/types"
	"htwkalender/model"
	"reflect"
	"testing"
	"time"
)

func Test_extractSemesterAndYear(t *testing.T) {
	type args struct {
		semesterString string
	}
	tests := []struct {
		name  string
		args  args
		want  string
		want1 string
	}{
		{
			name: "Test 1",
			args: args{
				semesterString: "Wintersemester 2023/24 (Planungszeitraum 01.09.2023 bis 03.03.2024)",
			},
			want:  "ws",
			want1: "2023",
		},
		{
			name: "Test 2",
			args: args{
				semesterString: "Sommersemester 2023 (Planungszeitraum 06.03. bis 31.08.2023)",
			},
			want:  "ss",
			want1: "2023",
		},
		{
			name: "Test 3",
			args: args{
				semesterString: "Sommersemester 2010 (Planungszeitraum 06.03. bis 31.08.2023)",
			},
			want:  "ss",
			want1: "2010",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, got1 := extractSemesterAndYear(tt.args.semesterString)
			if got != tt.want {
				t.Errorf("extractSemesterAndYear() got = %v, want %v", got, tt.want)
			}
			if got1 != tt.want1 {
				t.Errorf("extractSemesterAndYear() got1 = %v, want %v", got1, tt.want1)
			}
		})
	}
}

func Test_replaceEmptyEventNames(t *testing.T) {
	type args struct {
		groups []model.SeminarGroup
	}
	tests := []struct {
		name string
		args args
		want []model.SeminarGroup
	}{
		{
			name: "Test 1",
			args: args{
				groups: []model.SeminarGroup{
					{
						Events: []model.Event{
							{
								Name: "Test",
							},
						},
					},
				},
			},
			want: []model.SeminarGroup{
				{
					Events: []model.Event{
						{
							Name: "Test",
						},
					},
				},
			},
		},
		{
			name: "Test 1",
			args: args{
				groups: []model.SeminarGroup{
					{
						Events: []model.Event{
							{
								Name: "",
							},
						},
					},
				},
			},
			want: []model.SeminarGroup{
				{
					Events: []model.Event{
						{
							Name: "Sonderveranstaltungen",
						},
					},
				},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := ReplaceEmptyEventNames(tt.args.groups); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("ReplaceEmptyEventNames() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_splitEventType(t *testing.T) {
	type args struct {
		events []model.Event
	}
	tests := []struct {
		name string
		args args
		want []model.Event
	}{
		{
			name: "Test 1",
			args: args{
				events: []model.Event{
					{
						EventType: "V",
					},
				},
			},
			want: []model.Event{
				{
					EventType:  "V",
					Compulsory: "",
				},
			},
		},
		{
			name: "Test 2",
			args: args{
				events: []model.Event{
					{
						EventType: "Vw",
					},
				},
			},
			want: []model.Event{
				{
					EventType:  "V",
					Compulsory: "w",
				},
			},
		},
		{
			name: "Test 3",
			args: args{
				events: []model.Event{
					{
						EventType: "Sperr",
					},
				},
			},
			want: []model.Event{
				{
					EventType:  "Sperr",
					Compulsory: "",
				},
			},
		},
		{
			name: "Test 4",
			args: args{
				events: []model.Event{
					{
						EventType: "Sperr",
					},
					{
						EventType: "Vw",
					},
				},
			},
			want: []model.Event{
				{
					EventType:  "Sperr",
					Compulsory: "",
				},
				{
					EventType:  "V",
					Compulsory: "w",
				},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got, _ := SplitEventType(tt.args.events); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("SplitEventType() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_generateUUIDs(t *testing.T) {
	type args struct {
		events []model.Event
		course string
	}
	tests := []struct {
		name string
		args args
		want []model.Event
	}{
		{
			name: "Test 1",
			args: args{
				events: []model.Event{
					{
						Name: " Arbeitssicherheit / Rechtsformen von Unternehmen B435 SBB  (wpf) & B348 BIB (pf) 5. FS",
					},
				},
				course: "21BIB-2a",
			},
			want: []model.Event{
				{
					Name: " Arbeitssicherheit / Rechtsformen von Unternehmen B435 SBB  (wpf) & B348 BIB (pf) 5. FS",
					UUID: "3720afdc-10c7-5b72-9489-cffb70cb0c13",
				},
			},
		},
		{
			name: "Test 2",
			args: args{
				events: []model.Event{
					{
						Name: " Arbeitssicherheit / Rechtsformen von Unternehmen B435 SBB  (wpf) & B348 BIB (pf) 5. FS",
					},
				},
				course: "21BIB-2b",
			},
			want: []model.Event{
				{
					Name: " Arbeitssicherheit / Rechtsformen von Unternehmen B435 SBB  (wpf) & B348 BIB (pf) 5. FS",
					UUID: "81083480-bcf1-5452-af84-bb27d79282d8",
				},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := generateUUIDs(tt.args.events, tt.args.course); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("generateUUIDs() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_createTimeFromHourAndMinuteString(t *testing.T) {
	type args struct {
		tableTime string
	}
	tests := []struct {
		name string
		args args
		want time.Time
	}{
		{
			name: "Test 1",
			args: args{
				tableTime: "08:00",
			},
			want: time.Date(0, 0, 0, 8, 0, 0, 0, time.UTC),
		},
		{
			name: "Test 2",
			args: args{
				tableTime: "08:15",
			},
			want: time.Date(0, 0, 0, 8, 15, 0, 0, time.UTC),
		},
		{
			name: "Test 3",
			args: args{
				tableTime: "08:30",
			},
			want: time.Date(0, 0, 0, 8, 30, 0, 0, time.UTC),
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := createTimeFromHourAndMinuteString(tt.args.tableTime); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("createTimeFromHourAndMinuteString() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_replaceTimeInDate(t *testing.T) {
	type args struct {
		date time.Time
		time time.Time
	}
	tests := []struct {
		name string
		args args
		want time.Time
	}{
		{
			name: "Test 1",
			args: args{
				date: time.Date(2021, 1, 1, 0, 0, 0, 0, time.UTC),
				time: time.Date(0, 0, 0, 8, 0, 0, 0, time.UTC),
			},
			want: time.Date(2021, 1, 1, 8, 0, 0, 0, time.UTC),
		},
		{
			name: "Test 2",
			args: args{
				date: time.Date(2021, 1, 1, 0, 0, 0, 0, time.UTC),
				time: time.Date(0, 0, 0, 8, 15, 0, 0, time.UTC),
			},
			want: time.Date(2021, 1, 1, 8, 15, 0, 0, time.UTC),
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := replaceTimeForDate(tt.args.date, tt.args.time); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("addTimeToDate() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_convertWeeksToDates(t *testing.T) {
	type args struct {
		events   []model.Event
		semester string
		year     string
	}
	returnDateTime := func(date time.Time) types.DateTime {
		dateTime, err := types.ParseDateTime(date)
		if err != nil {
			fmt.Println(err)
		}
		return dateTime
	}
	tests := []struct {
		name string
		args args
		want []model.Event
	}{
		{
			name: "Test Wintertime",
			args: args{
				events: []model.Event{
					{
						Week:  "1",
						Day:   "Montag",
						Start: returnDateTime(time.Date(0, 0, 0, 7, 30, 0, 0, time.UTC)),
						End:   returnDateTime(time.Date(0, 0, 0, 9, 0, 0, 0, time.UTC)),
					},
				},
				semester: "ws",
				year:     "2021",
			},
			want: []model.Event{
				{
					Week:     "1",
					Day:      "Montag",
					Start:    returnDateTime(time.Date(2021, 1, 4, 6, 30, 0, 0, time.UTC)),
					End:      returnDateTime(time.Date(2021, 1, 4, 8, 0, 0, 0, time.UTC)),
					Semester: "ws",
				},
			},
		},
		{
			name: "Test Summertime",
			args: args{
				events: []model.Event{
					{
						Week:  "30",
						Day:   "Donnerstag",
						Start: returnDateTime(time.Date(0, 0, 0, 7, 30, 0, 0, time.UTC)),
						End:   returnDateTime(time.Date(0, 0, 0, 0, 0, 0, 0, time.UTC)),
					},
				},
				semester: "ws",
				year:     "2023",
			},
			want: []model.Event{
				{
					Week:     "30",
					Day:      "Donnerstag",
					Start:    returnDateTime(time.Date(2023, 7, 27, 5, 30, 0, 0, time.UTC)),
					End:      returnDateTime(time.Date(2023, 7, 27, 22, 0, 0, 0, time.UTC)),
					Semester: "ws",
				},
			},
		},
		{
			name: "Test NextDay",
			args: args{
				events: []model.Event{
					{
						Week:  "45",
						Day:   "Donnerstag",
						Start: returnDateTime(time.Date(0, 0, 0, 7, 30, 0, 0, time.UTC)),
						End:   returnDateTime(time.Date(0, 0, 0, 4, 0, 0, 0, time.UTC)),
					},
				},
				semester: "ws",
				year:     "2023",
			},
			want: []model.Event{
				{
					Week:     "45",
					Day:      "Donnerstag",
					Start:    returnDateTime(time.Date(2023, 11, 9, 6, 30, 0, 0, time.UTC)),
					End:      returnDateTime(time.Date(2023, 11, 10, 3, 0, 0, 0, time.UTC)),
					Semester: "ws",
				},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := convertWeeksToDates(tt.args.events, tt.args.semester, tt.args.year); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("convertWeeksToDates() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_replaceTimeForDate(t *testing.T) {
	type args struct {
		date            time.Time
		replacementTime time.Time
	}
	tests := []struct {
		name string
		args args
		want time.Time
	}{
		{
			name: "Replace Hour",
			args: args{
				date:            time.Date(2021, 1, 1, 0, 0, 0, 0, time.UTC),
				replacementTime: time.Date(0, 0, 0, 8, 0, 0, 0, time.UTC),
			},
			want: time.Date(2021, 1, 1, 8, 0, 0, 0, time.UTC),
		},
		{
			name: "Replace Hour and Minute",
			args: args{
				date:            time.Date(2021, 1, 1, 0, 0, 0, 0, time.UTC),
				replacementTime: time.Date(0, 0, 0, 8, 15, 0, 0, time.UTC),
			},
			want: time.Date(2021, 1, 1, 8, 15, 0, 0, time.UTC),
		},
		{
			name: "Replace Hour and Minute",
			args: args{
				date:            time.Date(2021, 1, 1, 0, 0, 0, 0, time.UTC),
				replacementTime: time.Date(0, 0, 0, 8, 30, 0, 0, time.UTC),
			},
			want: time.Date(2021, 1, 1, 8, 30, 0, 0, time.UTC),
		},
		{
			name: "Replace Hour and Minute without Year, Month, Day",
			args: args{
				date:            time.Date(2021, 1, 1, 0, 0, 0, 0, time.UTC),
				replacementTime: time.Date(2023, 10, 3, 8, 30, 0, 0, time.UTC),
			},
			want: time.Date(2021, 1, 1, 8, 30, 0, 0, time.UTC),
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := replaceTimeForDate(tt.args.date, tt.args.replacementTime); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("replaceTimeForDate() = %v, want %v", got, tt.want)
			}
		})
	}
}