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

use crate::error::*;

#[derive(Debug)]
pub struct SqliteError {
    pub extended_code: i32,
    pub message: Option<String>,
}

#[cfg(not(feature = "sqlite-native"))]
impl std::fmt::Display for SqliteError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "Error code {}", self.extended_code)
    }
}

impl std::error::Error for SqliteError {}

impl SqliteError {
    pub fn new(extended_code: i32, message: Option<String>) -> Self {
        Self { extended_code, message }
    }

    pub fn primary_code(&self) -> i32 {
        self.extended_code & 0xFF
    }
}

impl From<SqliteError> for Error {
    fn from(error: SqliteError) -> Self {
        match error {
            SqliteError {
                extended_code: super::ffi::SQLITE_CONSTRAINT_UNIQUE | super::ffi::SQLITE_CONSTRAINT_PRIMARYKEY,
                message: Some(description),
            } => {
                let constraint = description
                    .split(": ")
                    .nth(1)
                    .map(|s| s.split(", "))
                    .map(|i| i.flat_map(|s| s.split('.').last()))
                    .map(DatabaseConstraint::fields)
                    .unwrap_or(DatabaseConstraint::CannotParse);

                let kind = ErrorKind::UniqueConstraintViolation { constraint };
                let mut builder = Error::builder(kind);

                builder.set_original_code(error.extended_code.to_string());
                builder.set_original_message(description);

                builder.build()
            }

            SqliteError {
                extended_code: super::ffi::SQLITE_CONSTRAINT_NOTNULL,
                message: Some(description),
            } => {
                let constraint = description
                    .split(": ")
                    .nth(1)
                    .map(|s| s.split(", "))
                    .map(|i| i.flat_map(|s| s.split('.').last()))
                    .map(DatabaseConstraint::fields)
                    .unwrap_or(DatabaseConstraint::CannotParse);

                let kind = ErrorKind::NullConstraintViolation { constraint };
                let mut builder = Error::builder(kind);

                builder.set_original_code(error.extended_code.to_string());
                builder.set_original_message(description);

                builder.build()
            }

            SqliteError {
                extended_code: super::ffi::SQLITE_CONSTRAINT_FOREIGNKEY | super::ffi::SQLITE_CONSTRAINT_TRIGGER,
                message: Some(description),
            } => {
                let mut builder = Error::builder(ErrorKind::ForeignKeyConstraintViolation {
                    constraint: DatabaseConstraint::ForeignKey,
                });

                builder.set_original_code(error.extended_code.to_string());
                builder.set_original_message(description);

                builder.build()
            }

            SqliteError { extended_code, message } if error.primary_code() == super::ffi::SQLITE_BUSY => {
                let mut builder = Error::builder(ErrorKind::SocketTimeout);
                builder.set_original_code(format!("{extended_code}"));

                if let Some(description) = message {
                    builder.set_original_message(description);
                }

                builder.build()
            }

            SqliteError {
                extended_code,
                ref message,
            } => match message {
                Some(d) if d.starts_with("no such table") => {
                    let table = d.split(": ").last().into();
                    let kind = ErrorKind::TableDoesNotExist { table };

                    let mut builder = Error::builder(kind);
                    builder.set_original_code(format!("{extended_code}"));
                    builder.set_original_message(d);

                    builder.build()
                }
                Some(d) if d.contains("has no column named") => {
                    let column = d.split(" has no column named ").last().into();
                    let kind = ErrorKind::ColumnNotFound { column };

                    let mut builder = Error::builder(kind);
                    builder.set_original_code(format!("{extended_code}"));
                    builder.set_original_message(d);

                    builder.build()
                }
                Some(d) if d.starts_with("no such column: ") => {
                    let column = d.split("no such column: ").last().into();
                    let kind = ErrorKind::ColumnNotFound { column };

                    let mut builder = Error::builder(kind);
                    builder.set_original_code(format!("{extended_code}"));
                    builder.set_original_message(d);

                    builder.build()
                }
                _ => {
                    let description = message.as_ref().map(|d| d.to_string());
                    let mut builder = Error::builder(ErrorKind::QueryError(error.into()));
                    builder.set_original_code(format!("{extended_code}"));

                    if let Some(description) = description {
                        builder.set_original_message(description);
                    }

                    builder.build()
                }
            },
        }
    }
}