-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
176 lines (129 loc) · 3.68 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
package main
import (
"errors"
"fmt"
"io"
"io/fs"
"log/slog"
"os"
"strconv"
"time"
"github.com/mindcrackx/aoc2023/days"
"github.com/mindcrackx/aoc2023/utils"
)
const AocYear = 2023
func setup() map[int]map[int]func(io.Reader) (string, error) {
lookup := make(map[int]map[int]func(io.Reader) (string, error))
for day := 1; day <= 25; day++ {
lookup[day] = make(map[int]func(io.Reader) (string, error))
}
lookup[1][1] = days.One_1
lookup[1][2] = days.One_2
lookup[2][1] = days.Two_1
lookup[2][2] = days.Two_2
lookup[3][1] = days.Three_1
lookup[3][2] = days.Three_2
lookup[4][1] = days.Four_1
lookup[4][2] = days.Four_2
lookup[5][1] = days.Five_1
lookup[5][2] = days.Five_2
lookup[6][1] = days.Six_1
lookup[6][2] = days.Six_2
lookup[7][1] = days.Seven_1
lookup[7][2] = days.Seven_2
lookup[8][1] = days.Eight_1
lookup[8][2] = days.Eight_2
lookup[9][1] = days.Nine_1
lookup[9][2] = days.Nine_2
lookup[10][1] = days.Ten_1
lookup[10][2] = days.Ten_2
lookup[11][1] = days.Eleven_1
lookup[11][2] = days.Eleven_2
lookup[12][1] = days.Twelve_1
lookup[12][2] = days.Twelve_2
lookup[13][1] = days.Thirteen_1
lookup[13][2] = days.Thirteen_2
lookup[14][1] = days.Fourteen_1
lookup[14][2] = days.Fourteen_2
lookup[15][1] = days.Fifteen_1
lookup[15][2] = days.Fifteen_2
lookup[16][1] = days.Sixteen_1
lookup[16][2] = days.Sixteen_2
lookup[17][1] = days.Seventeen_1
lookup[17][2] = days.Seventeen_2
lookup[18][1] = days.Eighteen_1
lookup[18][2] = days.Eighteen_2
lookup[19][1] = days.Nineteen_1
lookup[19][2] = days.Nineteen_2
lookup[20][1] = days.Twenty_1
lookup[20][2] = days.Twenty_2
lookup[21][1] = days.Twentyone_1
lookup[21][2] = days.Twentyone_2
lookup[22][1] = days.Twentytwo_1
lookup[22][2] = days.Twentytwo_2
lookup[23][1] = days.Twentythree_1
lookup[23][2] = days.Twentythree_2
lookup[24][1] = days.Twentyfour_1
lookup[24][2] = days.Twentyfour_2
lookup[25][1] = days.Twentyfive_1
lookup[25][2] = days.Twentyfive_2
return lookup
}
func main() {
if err := run(); err != nil {
slog.Error("during run", "err", err)
os.Exit(1)
}
}
func run() error {
if len(os.Args) < 3 {
return fmt.Errorf("expected 2 args (day and part), but got %d", len(os.Args)-1)
}
day, err := strconv.Atoi(os.Args[1])
if err != nil {
return fmt.Errorf("converting day %q to int: %w", os.Args[1], err)
}
if day <= 0 || day > 25 {
return fmt.Errorf("expected day between 1 and 25, but got %d", day)
}
part, err := strconv.Atoi(os.Args[2])
if err != nil {
return fmt.Errorf("converting part %q to int: %w", os.Args[2], err)
}
if part <= 0 || part > 2 {
return fmt.Errorf("expected part to be 1 or 2, but got %d", part)
}
lookup := setup()
slog.Info("running...", "day", day, "part", part)
file, err := os.Open(fmt.Sprintf("./inputs/%02d.txt", day))
if err != nil {
if !errors.Is(err, fs.ErrNotExist) {
return fmt.Errorf("opening input file for day %d: %w", day, err)
}
// no cached file, download
slog.Info("downloading input", "day", day)
sessionCookie := os.Getenv("AOC_SESSION_COOKIE")
if sessionCookie == "" {
return errors.New("no session cookie in env var 'AOC_SESSION_COOKIE' found")
}
err = utils.DownloadInput(sessionCookie, AocYear, day, "")
if err != nil {
return fmt.Errorf("downloading input file: %w", err)
}
file, err = os.Open(fmt.Sprintf("./inputs/%02d.txt", day))
if err != nil {
return err
}
}
defer file.Close()
start := time.Now()
result, err := lookup[day][part](file)
if err != nil {
return fmt.Errorf("day=%d part=%d: %w", day, part, err)
}
end := time.Now()
slog.Info("timing", "day", day, "part", part, "duration", end.Sub(start))
fmt.Println("Result:")
fmt.Println(result)
return nil
}