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

// Copyright 2021 Datafuse Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::collections::BTreeMap;
use std::fmt::Display;
use std::fmt::Formatter;

use derive_visitor::Drive;
use derive_visitor::DriveMut;

use crate::ast::write_comma_separated_list;
use crate::ast::write_dot_separated_list;
use crate::ast::write_space_separated_string_map;
use crate::ast::CreateOption;
use crate::ast::CreateTableSource;
use crate::ast::Expr;
use crate::ast::Identifier;
use crate::ast::Query;
use crate::ast::WarehouseOptions;

#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub enum TargetLag {
    IntervalSecs(u64),
    Downstream,
}

impl Display for TargetLag {
    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
        match self {
            TargetLag::IntervalSecs(secs) => {
                write!(f, "{} SECOND", secs)
            }
            TargetLag::Downstream => {
                write!(f, "DOWNSTREAM")
            }
        }
    }
}

#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub enum RefreshMode {
    Auto,
    Full,
    Incremental,
}

impl Display for RefreshMode {
    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
        match self {
            RefreshMode::Auto => {
                write!(f, "AUTO")
            }
            RefreshMode::Full => {
                write!(f, "FULL")
            }
            RefreshMode::Incremental => {
                write!(f, "INCREMENTAL")
            }
        }
    }
}

#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub enum InitializeMode {
    OnCreate,
    OnSchedule,
}

impl Display for InitializeMode {
    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
        match self {
            InitializeMode::OnCreate => {
                write!(f, "ON_CREATE")
            }
            InitializeMode::OnSchedule => {
                write!(f, "ON_SCHEDULE")
            }
        }
    }
}

#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub struct CreateDynamicTableStmt {
    pub create_option: CreateOption,
    pub transient: bool,
    pub catalog: Option<Identifier>,
    pub database: Option<Identifier>,
    pub table: Identifier,
    pub source: Option<CreateTableSource>,
    pub cluster_by: Vec<Expr>,

    pub target_lag: TargetLag,
    pub warehouse_opts: WarehouseOptions,
    pub refresh_mode: RefreshMode,
    pub initialize: InitializeMode,

    pub table_options: BTreeMap<String, String>,
    pub as_query: Box<Query>,
}

impl Display for CreateDynamicTableStmt {
    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
        write!(f, "CREATE ")?;
        if let CreateOption::CreateOrReplace = self.create_option {
            write!(f, "OR REPLACE ")?;
        }
        if self.transient {
            write!(f, "TRANSIENT ")?;
        }
        write!(f, "DYNAMIC TABLE ")?;
        if let CreateOption::CreateIfNotExists = self.create_option {
            write!(f, "IF NOT EXISTS ")?;
        }
        write_dot_separated_list(
            f,
            self.catalog
                .iter()
                .chain(&self.database)
                .chain(Some(&self.table)),
        )?;

        if let Some(source) = &self.source {
            write!(f, " {source}")?;
        }

        if !self.cluster_by.is_empty() {
            write!(f, " CLUSTER BY (")?;
            write_comma_separated_list(f, &self.cluster_by)?;
            write!(f, ")")?
        }

        write!(f, " TARGET_LAG = {}", self.target_lag)?;
        if self.warehouse_opts.warehouse.is_some() {
            write!(f, " {}", self.warehouse_opts)?;
        }
        write!(f, " REFRESH_MODE = {}", self.refresh_mode)?;
        write!(f, " INITIALIZE = {}", self.initialize)?;

        // Format table options
        if !self.table_options.is_empty() {
            write!(f, " ")?;
            write_space_separated_string_map(f, &self.table_options)?;
        }

        write!(f, " AS {}", self.as_query)?;
        Ok(())
    }
}