Yoda 0.10.10

Browser for Gemini Protocol
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

use gtk::glib::DateTime;
use sqlite::{Connection, Error, Transaction};
use std::{rc::Rc, sync::RwLock};

pub struct Table {
    pub id: i64,
    pub is_active: bool,
    pub time: DateTime,
    pub name: Option<String>,
}

pub struct Database {
    pub connection: Rc<RwLock<Connection>>,
}

impl Database {
    // Constructors

    /// Create new `Self`
    pub fn build(connection: &Rc<RwLock<Connection>>) -> Self {
        Self {
            connection: connection.clone(),
        }
    }

    // Getters

    /// Get all records
    pub fn records(&self) -> Result<Vec<Table>, Error> {
        let readable = self.connection.read().unwrap();
        let tx = readable.unchecked_transaction()?;
        select(&tx)
    }

    /// Get active profile record if exist
    pub fn active(&self) -> Result<Option<Table>, Error> {
        let records = self.records()?;
        Ok(records.into_iter().find(|record| record.is_active))
    }

    // Setters

    /// Create new record in `Self` database connected
    pub fn add(&self, is_active: bool, time: DateTime, name: Option<String>) -> Result<i64, Error> {
        // Begin new transaction
        let mut writable = self.connection.write().unwrap();
        let tx = writable.transaction()?;

        // New record has active status
        if is_active {
            // Deactivate other records as only one profile should be active
            for record in select(&tx)? {
                update(&tx, record.id, false, record.time, record.name)?;
            }
        }

        // Create new record
        insert(&tx, is_active, time, name)?;

        // Hold insert ID for result
        let id = last_insert_id(&tx);

        // Done
        tx.commit()?;

        Ok(id)
    }
}

// Low-level DB API

pub fn init(tx: &Transaction) -> Result<usize, Error> {
    tx.execute(
        "CREATE TABLE IF NOT EXISTS `profile`
        (
            `id`        INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
            `is_active` INTEGER NOT NULL,
            `time`      INTEGER NOT NULL,
            `name`      VARCHAR(255)
        )",
        [],
    )
}

pub fn insert(
    tx: &Transaction,
    is_active: bool,
    time: DateTime,
    name: Option<String>,
) -> Result<usize, Error> {
    tx.execute(
        "INSERT INTO `profile` (
            `is_active`,
            `time`,
            `name`
        ) VALUES (?, ?, ?)",
        (is_active, time.to_unix(), name),
    )
}

pub fn update(
    tx: &Transaction,
    id: i64,
    is_active: bool,
    time: DateTime,
    name: Option<String>,
) -> Result<usize, Error> {
    tx.execute(
        "UPDATE `profile` SET `is_active` = ?, `time` = ?, `name` = ? WHERE `id` = ?",
        (is_active, time.to_unix(), name, id),
    )
}

pub fn select(tx: &Transaction) -> Result<Vec<Table>, Error> {
    let mut stmt = tx.prepare("SELECT `id`, `is_active`, `time`, `name` FROM `profile`")?;
    let result = stmt.query_map([], |row| {
        Ok(Table {
            id: row.get(0)?,
            is_active: row.get(1)?,
            time: DateTime::from_unix_local(row.get(2)?).unwrap(),
            name: row.get(3)?,
        })
    })?;

    let mut records = Vec::new();

    for record in result {
        let table = record?;
        records.push(table);
    }

    Ok(records)
}

pub fn last_insert_id(tx: &Transaction) -> i64 {
    tx.last_insert_rowid()
}