quick-erd/dist/db/text-to-sqlite.js

quick and easy text-based ERD + code generator for migration, query, typescript types and orm entity

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.textToSqlite = textToSqlite;
exports.toSqliteColumnSql = toSqliteColumnSql;
const ast_1 = require("../core/ast");
const sort_tables_1 = require("./sort-tables");
function textToSqlite(text) {
    const result = (0, ast_1.parse)(text);
    const table_list = (0, sort_tables_1.sortTables)(result.table_list);
    let up = '';
    let down = '';
    table_list.forEach(table => {
        const field_list = table.field_list.slice();
        const fieldNames = {};
        if (field_list.length === 0) {
            field_list.push({
                name: 'id',
                type: 'integer',
                is_primary_key: true,
                is_null: false,
                is_unique: false,
                is_unsigned: false,
                default_value: undefined,
                references: undefined,
            });
        }
        // const fields: Record<string, 1> = {}
        up += /* sql */ `
create table if not exists ${table.name} (`;
        field_list.forEach((field, i) => {
            fieldNames[field.name] = 1;
            const is_first = i === 0;
            if (is_first) {
                up += `
  `;
            }
            else {
                up += `
, `;
            }
            up += toSqliteColumnSql(field);
        });
        if (!fieldNames.created_at && !fieldNames.updated_at) {
            up += /* sql */ `
, created_at text not null default CURRENT_TIMESTAMP
, updated_at text null`;
        }
        up += /* sql */ `
);
`;
        down =
            /* sql */ `
drop table if exists ${table.name};
` + down;
    });
    up = up
        .replace(/\r\n\r\n/, '\r\n')
        .replace(/\n\n/g, '\n')
        .trim();
    down = down
        .replace(/\r\n\r\n/, '\r\n')
        .replace(/\n\n/g, '\n')
        .trim();
    return { up, down };
}
function toSqliteColumnSql(field) {
    if (field.is_primary_key) {
        return `${field.name} integer primary key`;
    }
    let type = field.type;
    // TODO add check constraints for varchar and char
    if (type.match(/^string/i)) {
        type = 'text';
    }
    let enums = '';
    if (type.match(/^enum/i)) {
        enums = type.replace(/^enum/i, '');
        type = 'text';
    }
    let sql = `${field.name} ${type}`;
    if (field.is_null) {
        sql += ` null`;
    }
    else {
        sql += ` not null`;
    }
    if (field.is_unique) {
        sql += ` unique`;
    }
    if (field.default_value) {
        sql += ` default ${field.default_value}`;
    }
    if (enums) {
        sql += ` check(${field.name} in ${enums})`;
    }
    const ref = field.references;
    if (ref) {
        sql += ` references ${ref.table}(${ref.field})`;
    }
    return sql;
}