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

use std::collections::HashMap;

use diesel::prelude::*;
use itertools::Itertools;

use crate::models::Setting;
use crate::NxtnoteConfigFile;
use diesel::result::Error;

pub type NamespaceGroupedSettings = HashMap<String, CategoryGroupedSettings>;
pub type CategoryGroupedSettings = HashMap<String, NamedSettings>;
pub type NamedSettings = HashMap<String, Vec<u8>>;

pub trait SettingCrud {
    fn retrieve_namespaces(&self) -> Vec<String>;
    fn retrieve_all_settings(&self) -> NamespaceGroupedSettings;
    fn retrieve_namespace_settings(&self, namespace: String) -> CategoryGroupedSettings;
    fn retrieve_category_settings(&self, namespace: String, category: String) -> NamedSettings;
    fn retrieve_setting(&self, namespace: String, category: String, name: String) -> Vec<u8>;
    fn upsert_setting(&self, updated_setting: Setting, should_update: bool);
    fn upsert_multiple_settings(&self, next_settings: Vec<Setting>, should_update: bool);
    fn delete_setting(&self, namespace: String, category: String, name: String);
}

impl SettingCrud for NxtnoteConfigFile {
    fn retrieve_namespaces(&self) -> Vec<String> {
        use crate::schema::settings::dsl::*;

        settings
            .select(namespace)
            .load(self)
            .expect("Could not retrieve settings namespaces")
    }

    fn retrieve_all_settings(&self) -> NamespaceGroupedSettings {
        use crate::schema::settings::dsl as settings_dsl;

        let saved_settings: Vec<Setting> = settings_dsl::settings
            .get_results(self)
            .expect("Could not retrieve settings");

        get_namespace_grouped_settings(saved_settings)
    }

    fn retrieve_namespace_settings(&self, namespace: String) -> CategoryGroupedSettings {
        use crate::schema::settings::dsl as settings_dsl;

        let saved_settings: Vec<Setting> = settings_dsl::settings
            .filter(settings_dsl::namespace.eq(&namespace))
            .get_results(self)
            .expect(&format!("Could not retrieve settings of the namespace {}", namespace));

        get_category_grouped_settings(saved_settings.iter().collect())
    }

    fn retrieve_category_settings(&self, namespace: String, category: String) -> NamedSettings {
        use crate::schema::settings::dsl as settings_dsl;

        let saved_settings: Vec<Setting> = settings_dsl::settings
            .filter(
                settings_dsl::namespace
                    .eq(&namespace)
                    .and(settings_dsl::category.eq(&category)),
            )
            .get_results(self)
            .expect(&format!(
                "Could not retrieve settings of the namespace {} with the category {}",
                namespace, category
            ));

        get_named_category_settings(saved_settings.iter().collect())
    }

    fn retrieve_setting(&self, namespace: String, category: String, name: String) -> Vec<u8> {
        use crate::schema::settings::dsl as settings_dsl;

        let setting: Setting = settings_dsl::settings
            .find((&namespace, &category, &name))
            .first(self)
            .expect(&format!("Could not find setting {}.{}.{}", namespace, category, name));

        setting.value
    }

    fn upsert_setting(&self, updated_setting: Setting, should_update: bool) {
        use crate::schema::settings::dsl as settings_dsl;

        let found_setting: QueryResult<Setting> = settings_dsl::settings
            .find((
                &updated_setting.namespace,
                &updated_setting.category,
                &updated_setting.name,
            ))
            .get_result::<Setting>(self);

        match found_setting {
            Err(_) => {
                diesel::insert_into(settings_dsl::settings)
                    .values(&updated_setting)
                    .execute(self)
                    .expect(&format!(
                        "Could not insert setting {}.{}.{}",
                        updated_setting.namespace, updated_setting.category, updated_setting.name
                    ));
            }
            Ok(_) => {
                if should_update {
                    diesel::update(settings_dsl::settings.find((
                        &updated_setting.namespace,
                        &updated_setting.category,
                        &updated_setting.name,
                    )))
                    .set(settings_dsl::value.eq(updated_setting.value))
                    .execute(self)
                    .expect(&format!(
                        "Could not update setting {}.{}.{}",
                        updated_setting.namespace, updated_setting.category, updated_setting.name
                    ));
                }
            }
        }
    }

    fn upsert_multiple_settings(&self, next_settings: Vec<Setting>, should_update: bool) {
        self.transaction::<_, Error, _>(|| {
            for next_setting in next_settings {
                self.upsert_setting(next_setting, should_update);
            }

            Ok(())
        })
        .expect("Could not upsert settings");
    }

    fn delete_setting(&self, namespace: String, category: String, name: String) {
        use crate::schema::settings::dsl as settings_dsl;

        diesel::delete(settings_dsl::settings.find((&namespace, &category, &name)))
            .execute(self)
            .expect(&format!("Could not delete setting {}.{}.{}", namespace, category, name));
    }
}

fn get_named_category_settings(settings: Vec<&Setting>) -> NamedSettings {
    let mut named_category_settings = NamedSettings::new();

    for setting in settings {
        named_category_settings.insert(setting.name.to_string(), setting.value.clone());
    }

    named_category_settings
}

fn get_category_grouped_settings(settings: Vec<&Setting>) -> CategoryGroupedSettings {
    let mut category_grouped = CategoryGroupedSettings::new();

    for (category, category_settings) in &settings.into_iter().group_by(|setting| setting.category.to_string()) {
        category_grouped.insert(category, get_named_category_settings(category_settings.collect()));
    }

    category_grouped
}

fn get_namespace_grouped_settings(settings: Vec<Setting>) -> NamespaceGroupedSettings {
    let mut namespace_grouped = NamespaceGroupedSettings::new();

    for (namespace, namespace_settings) in &settings.iter().group_by(|setting| setting.namespace.to_string()) {
        namespace_grouped.insert(namespace, get_category_grouped_settings(namespace_settings.collect()));
    }

    namespace_grouped
}