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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
package main
import "database/sql"
import "strings"
type Ingredient struct {
Name string
Amount float64
Unit string
}
type Step struct {
Num int
Desc string
Time int
}
type Recipe struct {
Id int
Title string
Desc string
Photos []string
Serving_size int
Cook_time int
Rating int
Num_cooked int
Keywords []string
Ingredients []Ingredient
Steps []Step
}
func MakeRecipe() *Recipe {
var r Recipe
r = Recipe{
Id: 0,
Title: "",
Desc: "",
Serving_size: 0,
Cook_time: 0,
Rating: 5,
Num_cooked: 0,
Keywords: make([]string, 0),
Ingredients: make([]Ingredient, 0),
Steps: make([]Step, 0)}
return &r
}
func RecipeFromId(id int, db *sql.DB) *Recipe {
var rec Recipe
var ingr Ingredient
var step Step
rows := db.QueryRow(`SELECT title, photo_urls, keywords,
description, serving_size, cook_time, rating,
num_cooked FROM recipes WHERE id = $1`, id)
var rating, num_cooked, servings, cook_time int
var title, photo_urls, keywords, desc string
err := rows.Scan(&title, &photo_urls, &keywords, &desc,
&servings, &cook_time, &rating, &num_cooked)
if err == sql.ErrNoRows {
return nil
}
rec = Recipe{
Id: id,
Title: title,
Desc: desc,
Photos: make([]string, 0),
Serving_size: servings,
Cook_time: cook_time,
Rating: rating,
Num_cooked: num_cooked,
Keywords: make([]string, 0),
Ingredients: make([]Ingredient, 0),
Steps: make([]Step, 0)}
if len(photo_urls) > 0 {
photos := strings.Split(photo_urls, "|")
for _, p := range photos {
rec.Photos = append(rec.Photos, p)
}
}
if len(keywords) > 0 {
keyword_split := strings.Split(keywords, "|")
for _, k := range keyword_split {
rec.Keywords = append(rec.Keywords, k)
}
}
var name, unit string
var amount float64
rows_ingr, err := db.Query(`SELECT name, amount, unit
FROM ingredients WHERE recipe_id = $1`,
id)
defer rows_ingr.Close()
if err == nil {
for rows_ingr.Next() {
rows_ingr.Scan(&name, &amount, &unit)
ingr = Ingredient{
Name: name,
Amount: amount,
Unit: unit,
}
rec.Ingredients = append(rec.Ingredients, ingr)
}
}
var num, timer int
rows_steps, err := db.Query(`SELECT step, description, timer
FROM steps WHERE recipe_id = $1`, id)
defer rows_steps.Close()
if err == nil {
for rows_steps.Next() {
rows_steps.Scan(&num, &desc, &timer)
step = Step{
Num: num,
Desc: desc,
Time: timer,
}
rec.Steps = append(rec.Steps, step)
}
}
return &rec
}
func AddRecipeDB(r *Recipe, db *sql.DB) error {
var photo_urls, keywords strings.Builder
var id int
for _, u := range r.Photos {
photo_urls.WriteString(u)
photo_urls.WriteRune('|')
}
for _, k := range r.Keywords {
keywords.WriteString(k)
keywords.WriteRune('|')
}
err := db.QueryRow(`INSERT INTO recipes (title, photo_urls,
keywords, description, serving_size, cook_time,
rating, num_cooked)
VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
RETURNING id`,
r.Title, //1
photo_urls.String(), //2
keywords.String(), //3
r.Desc, //4
r.Serving_size, //5
r.Cook_time, //6
r.Rating, //7
r.Num_cooked, //8
).Scan(&id)
if err != nil {
return err
}
var ingr_id int
for i, ingr := range r.Ingredients {
err := db.QueryRow(`INSERT INTO ingredients
(name, amount, unit, recipe_id)
VALUES ($1, $2, $3, $4)
RETURNING id`,
ingr.Name,
ingr.Amount,
ingr.Unit,
id,
).Scan(&ingr_id)
if err != nil {
r.Ingredients = append(r.Ingredients[:i],
r.Ingredients[i+1:]...)
}
}
var step_id int
for i, step := range r.Steps {
err := db.QueryRow(`INSERT INTO steps
(step, description, timer, recipe_id)
VALUES ($1, $2, $3, $4)
RETURNING id`,
step.Num,
step.Desc,
step.Time,
id,
).Scan(&step_id)
if err != nil {
r.Steps = append(r.Steps[:i],
r.Steps[i+1:]...)
}
}
r.Id = id
return nil
}
|
