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// spellchecker: words kysely insertable updateable introspector
import {
Generated,
Insertable,
Kysely,
Migration,
Migrator,
SqliteDatabase,
SqliteDialect,
SqliteStatement,
} from "kysely";
import * as sqlite from "@db/sqlite";
class SqliteStatementAdapter implements SqliteStatement {
constructor(public readonly stmt: sqlite.Statement) {}
get reader(): boolean {
return this.stmt.columnNames().length >= 1;
}
all(parameters: readonly unknown[]): unknown[] {
return this.stmt.all(...parameters as sqlite.BindValue[]);
}
iterate(parameters: readonly unknown[]): IterableIterator<unknown> {
return this.stmt.iter(...parameters as sqlite.BindValue[]);
}
run(
parameters: readonly unknown[],
): { changes: number | bigint; lastInsertRowid: number | bigint } {
const { db } = this.stmt;
const totalChangesBefore = db.totalChanges;
const changes = this.stmt.run(...parameters as sqlite.BindValue[]);
return {
changes: totalChangesBefore === db.totalChanges ? 0 : changes,
lastInsertRowid: db.lastInsertRowId,
};
}
}
class SqliteDatabaseAdapter implements SqliteDatabase {
constructor(public readonly db: sqlite.Database) {}
prepare(sql: string): SqliteStatementAdapter {
return new SqliteStatementAdapter(this.db.prepare(sql));
}
close(): void {
this.db.close();
}
}
export class DbError extends Error {
}
const NAMES = {
mail: {
table: "mail",
columns: {
id: "id",
messageId: "message_id",
awsMessageId: "aws_message_id",
date: "date",
raw: "raw",
},
},
} as const;
interface MailTable {
[NAMES.mail.columns.id]: Generated<number>;
[NAMES.mail.columns.messageId]: string;
[NAMES.mail.columns.awsMessageId]: string | null;
[NAMES.mail.columns.date]: string | null;
[NAMES.mail.columns.raw]: string;
}
interface Database {
[NAMES.mail.table]: MailTable;
}
const migrations: Record<string, Migration> = {
"0001-init": {
// deno-lint-ignore no-explicit-any
async up(db: Kysely<any>): Promise<void> {
await db.schema
.createTable(NAMES.mail.table)
.addColumn(
NAMES.mail.columns.id,
"integer",
(col) => col.primaryKey().autoIncrement(),
)
.addColumn(
NAMES.mail.columns.messageId,
"text",
(col) => col.notNull().unique(),
)
.addColumn(
NAMES.mail.columns.awsMessageId,
"text",
(col) => col.unique(),
)
.addColumn(NAMES.mail.columns.date, "text")
.addColumn(NAMES.mail.columns.raw, "text", (col) => col.notNull())
.execute();
for (
const column of [
NAMES.mail.columns.messageId,
NAMES.mail.columns.awsMessageId,
]
) {
await db.schema
.createIndex(`${NAMES.mail.table}_${column}`)
.on(NAMES.mail.table)
.column(column)
.execute();
}
},
// deno-lint-ignore no-explicit-any
async down(db: Kysely<any>): Promise<void> {
await db.schema.dropTable(NAMES.mail.table).execute();
},
},
};
export class DbService {
#db;
#kysely;
#migrator;
constructor(public readonly path: string) {
this.#db = new sqlite.Database(path);
this.#kysely = new Kysely<Database>({
dialect: new SqliteDialect(
{ database: new SqliteDatabaseAdapter(this.#db) },
),
});
this.#migrator = new Migrator({
db: this.#kysely,
provider: {
getMigrations(): Promise<Record<string, Migration>> {
return Promise.resolve(migrations);
},
},
});
}
async migrate(): Promise<void> {
await this.#migrator.migrateToLatest();
}
async addMail(mail: Insertable<MailTable>): Promise<number> {
const inserted = await this.#kysely.insertInto(NAMES.mail.table).values(
mail,
).executeTakeFirstOrThrow();
return Number(inserted.insertId!);
}
async messageIdToAws(messageId: string): Promise<string | null> {
const row = await this.#kysely.selectFrom(NAMES.mail.table).where(
NAMES.mail.columns.messageId,
"=",
messageId,
).select(NAMES.mail.columns.awsMessageId).executeTakeFirst();
return row?.aws_message_id ?? null;
}
async messageIdFromAws(awsMessageId: string): Promise<string | null> {
const row = await this.#kysely.selectFrom(NAMES.mail.table).where(
NAMES.mail.columns.awsMessageId,
"=",
awsMessageId,
).select(NAMES.mail.columns.messageId).executeTakeFirst();
return row?.message_id ?? null;
}
}
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