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api/.gitignore vendored Normal file
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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
# dependencies
/node_modules
/.pnp
.pnp.js
# testing
/coverage
# next.js
/.next/
/out/
# production
/build
# misc
.DS_Store
*.pem
# debug
npm-debug.log*
yarn-debug.log*
yarn-error.log*
# local env files
.env.local
.env.development.local
.env.test.local
.env.production.local
# vercel
.vercel
**/*.trace
**/*.zip
**/*.tar.gz
**/*.tgz
**/*.log
package-lock.json
**/*.bun
.env

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# Elysia with Bun runtime
## Getting Started
To get started with this template, simply paste this command into your terminal:
```bash
bun create elysia ./elysia-example
```
## Development
To start the development server run:
```bash
bun run dev
```
Open http://localhost:3000/ with your browser to see the result.

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{
"$schema": "https://biomejs.dev/schemas/1.8.3/schema.json",
"organizeImports": {
"enabled": true
},
"linter": {
"enabled": true,
"rules": {
"recommended": true
}
},
"formatter": {
"indentStyle": "space",
"indentWidth": 2
},
"json": {
"parser": {
"allowComments": true,
"allowTrailingCommas": true
}
}
}

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{
"name": "api",
"version": "1.0.50",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"dev": "bun run --watch src/index.ts"
},
"dependencies": {
"@elysiajs/cors": "^1.0.2",
"@it-incubator/prettier-config": "^0.1.2",
"elysia": "latest",
"postgres": "^3.4.4"
},
"devDependencies": {
"@biomejs/biome": "1.8.3",
"bun-types": "latest"
},
"prettier": "@it-incubator/prettier-config",
"module": "src/index.js"
}

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import cors from "@elysiajs/cors";
import { Elysia } from "elysia";
import postgres from "postgres";
const DB_URL = Bun.env.DB_URL;
if (!DB_URL) {
console.error("DB_URL not found in environment variables");
process.exit(1);
}
const sql = postgres(DB_URL);
const [{ version }] = await sql`SELECT version()`;
console.log("pg version: ", version);
const app = new Elysia({ prefix: "/api" })
.get("/", () => "Hello Elysia")
.get("/databases", async () => {
const databases = await getDatabases();
return new Response(JSON.stringify(databases, null, 2)).json();
})
.get("/databases/:dbName/tables", async ({ query, params }) => {
const { sortField, sortDesc } = query;
const { dbName } = params;
const tables = await getTables(dbName, sortField, sortDesc === "true");
return new Response(JSON.stringify(tables, null, 2)).json();
})
.get("databases/:dbName/tables/:name/data", async ({ params, query }) => {
const { name, dbName } = params;
const { perPage = "50", page = "0" } = query;
const offset = (
Number.parseInt(perPage, 10) * Number.parseInt(page, 10)
).toString();
const rows = sql`
SELECT COUNT(*)
FROM ${sql(dbName)}.${sql(name)}`;
const tables = sql`
SELECT *
FROM ${sql(dbName)}.${sql(name)}
LIMIT ${perPage} OFFSET ${offset}`;
const [[count], data] = await Promise.all([rows, tables]);
return {
count: count.count,
data,
};
})
.get("db/tables/:name/columns", async ({ params, query }) => {
const { name } = params;
const columns = await getColumns(name);
return new Response(JSON.stringify(columns, null, 2)).json();
})
.get("db/tables/:name/indexes", async ({ params, query }) => {
const { name } = params;
const indexes = await getIndexes(name);
return new Response(JSON.stringify(indexes, null, 2)).json();
})
.get("db/tables/:name/foreign-keys", async ({ params, query }) => {
const { name } = params;
const foreignKeys = await getForeignKeys(name);
return new Response(JSON.stringify(foreignKeys, null, 2)).json();
})
.use(cors())
.listen(3000);
console.log(
`🦊 Elysia is running at ${app.server?.hostname}:${app.server?.port}`,
);
async function getIndexes(table: string) {
const returnObj = {};
const [tableOidResult] = await sql`
SELECT oid
FROM pg_class
WHERE relname = ${table}
`;
const tableOid = tableOidResult.oid;
const columnsResult = await sql`
SELECT attnum, attname
FROM pg_attribute
WHERE attrelid = ${tableOid}
AND attnum > 0
`;
const columns = {};
columnsResult.forEach((row) => {
columns[row.attnum] = row.attname;
});
const indexResult = await sql`
SELECT
relname,
indisunique::int,
indisprimary::int,
indkey,
(indpred IS NOT NULL)::int as indispartial
FROM pg_index i
JOIN pg_class ci ON ci.oid = i.indexrelid
WHERE i.indrelid = ${tableOid}
`;
return indexResult.map((row) => {
return {
relname: row.relname,
key: row.relname,
type: row.indispartial
? "INDEX"
: row.indisprimary
? "PRIMARY"
: row.indisunique
? "UNIQUE"
: "INDEX",
columns: row.indkey.split(" ").map((indkey) => columns[indkey]),
};
});
}
async function getColumns(tableName: string) {
return await sql`
SELECT
cols.column_name,
cols.data_type,
cols.udt_name,
pgd.description AS column_comment
FROM
information_schema.columns AS cols
LEFT JOIN
pg_catalog.pg_statio_all_tables AS st ON st.relname = cols.table_name
LEFT JOIN
pg_catalog.pg_description AS pgd ON pgd.objoid = st.relid AND pgd.objsubid = cols.ordinal_position
WHERE
cols.table_name = ${tableName}
ORDER BY
cols.ordinal_position;
`;
}
async function getForeignKeys(table: string) {
const result = await sql`
SELECT
conname,
condeferrable::int AS deferrable,
pg_get_constraintdef(oid) AS definition
FROM
pg_constraint
WHERE
conrelid = (
SELECT pc.oid
FROM pg_class AS pc
INNER JOIN pg_namespace AS pn ON (pn.oid = pc.relnamespace)
WHERE pc.relname = ${table}
)
AND contype = 'f'::char
ORDER BY conkey, conname
`;
return result.map((row) => {
const match = row.definition.match(
/FOREIGN KEY\s*\((.+)\)\s*REFERENCES (.+)\((.+)\)(.*)$/iy,
);
console.log(match);
console.log("match[0]", match[0]);
console.log("match[1]", match[1]);
console.log("match[2]", match[2]);
if (match) {
const sourceColumns = match[1]
.split(",")
.map((col) => col.replaceAll('"', "").trim());
const targetTableMatch = match[2].match(
/^(("([^"]|"")+"|[^"]+)\.)?"?("([^"]|"")+"|[^"]+)$/,
);
console.log("targetTableMatch", targetTableMatch);
const targetTable = targetTableMatch ? targetTableMatch[0].trim() : null;
const targetColumns = match[3]
.split(",")
.map((col) => col.replaceAll('"', "").trim());
const { onDelete, onUpdate } = getActions(match[4]);
return {
conname: row.conname,
deferrable: Boolean(row.deferrable),
definition: row.definition,
source: sourceColumns,
ns: targetTableMatch
? targetTableMatch[0].replaceAll('"', "").trim()
: null,
table: targetTable.replaceAll('"', ""),
target: targetColumns,
on_delete: onDelete ?? "NO ACTION",
on_update: onUpdate ?? "NO ACTION",
};
}
});
}
function getActions(matchString: string) {
const onActions = "RESTRICT|NO ACTION|CASCADE|SET NULL|SET DEFAULT";
const onDeleteRegex = new RegExp(`ON DELETE (${onActions})`);
const onUpdateRegex = new RegExp(`ON UPDATE (${onActions})`);
const onDeleteMatch = matchString.match(onDeleteRegex);
const onUpdateMatch = matchString.match(onUpdateRegex);
const onDeleteAction = onDeleteMatch ? onDeleteMatch[1] : "NO ACTION";
const onUpdateAction = onUpdateMatch ? onUpdateMatch[1] : "NO ACTION";
return {
onDelete: onDeleteAction,
onUpdate: onUpdateAction,
};
}
async function getTables(
dbName: string,
sortField?: string,
sortDesc?: boolean,
) {
const tables = await sql`
WITH primary_keys AS (SELECT pg_class.relname AS table_name,
pg_namespace.nspname AS schema_name,
pg_attribute.attname AS primary_key
FROM pg_index
JOIN
pg_class ON pg_class.oid = pg_index.indrelid
JOIN
pg_attribute ON pg_attribute.attrelid = pg_class.oid AND
pg_attribute.attnum = ANY (pg_index.indkey)
JOIN
pg_namespace ON pg_namespace.oid = pg_class.relnamespace
WHERE pg_index.indisprimary)
SELECT t.schemaname AS schema_name,
t.tablename AS table_name,
pg_total_relation_size(quote_ident(t.schemaname) || '.' || quote_ident(t.tablename)) AS total_size,
pg_relation_size(quote_ident(t.schemaname) || '.' || quote_ident(t.tablename)) AS table_size,
pg_total_relation_size(quote_ident(t.schemaname) || '.' || quote_ident(t.tablename)) -
pg_relation_size(quote_ident(t.schemaname) || '.' || quote_ident(t.tablename)) AS index_size,
COALESCE(
(SELECT obj_description((quote_ident(t.schemaname) || '.' || quote_ident(t.tablename))::regclass)),
''
) AS comments,
(SELECT reltuples::bigint
FROM pg_class c
JOIN pg_namespace n ON n.oid = c.relnamespace
WHERE c.relname = t.tablename
AND n.nspname = t.schemaname) AS row_count,
(SELECT string_agg(indexname, ', ')
FROM pg_indexes
WHERE tablename = t.tablename
AND schemaname = t.schemaname) AS indexes,
t.tableowner AS owner,
COALESCE(
(SELECT string_agg(pk.primary_key, ', ')
FROM primary_keys pk
WHERE pk.schema_name = t.schemaname
AND pk.table_name = t.tablename),
''
) AS primary_key
FROM pg_tables t
WHERE t.schemaname = ${dbName}
ORDER BY ${
sortField
? sql`${sql(sortField)}
${sortDesc ? sql`DESC` : sql`ASC`}`
: sql`t.schemaname, t.tablename`
}`;
return tables.map((table) => ({
...table,
total_size: Number.parseInt(table.total_size, 10),
table_size: Number.parseInt(table.table_size, 10),
index_size: Number.parseInt(table.index_size, 10),
row_count: Number.parseInt(table.row_count, 10),
}));
}
async function getDatabases() {
const result = await sql`
SELECT nspname
FROM pg_catalog.pg_namespace;`;
return result.map(({ nspname }) => nspname);
}

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{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig to read more about this file */
/* Projects */
// "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
// "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */
// "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */
// "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */
// "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */
// "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. */
/* Language and Environment */
"target": "ES2021" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
// "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */
// "jsx": "preserve", /* Specify what JSX code is generated. */
// "experimentalDecorators": true, /* Enable experimental support for TC39 stage 2 draft decorators. */
// "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */
// "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
// "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
// "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
// "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
// "noLib": true, /* Disable including any library files, including the default lib.d.ts. */
// "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */
// "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */
/* Modules */
"module": "ES2022" /* Specify what module code is generated. */,
// "rootDir": "./", /* Specify the root folder within your source files. */
"moduleResolution": "node" /* Specify how TypeScript looks up a file from a given module specifier. */,
// "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */
// "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */
// "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */
// "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */
"types": [
"bun-types"
] /* Specify type package names to be included without being referenced in a source file. */,
// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
// "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. */
// "resolveJsonModule": true, /* Enable importing .json files. */
// "noResolve": true, /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
/* JavaScript Support */
// "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
// "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */
// "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
/* Emit */
// "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
// "declarationMap": true, /* Create sourcemaps for d.ts files. */
// "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */
// "sourceMap": true, /* Create source map files for emitted JavaScript files. */
// "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
// "outDir": "./", /* Specify an output folder for all emitted files. */
// "removeComments": true, /* Disable emitting comments. */
// "noEmit": true, /* Disable emitting files from a compilation. */
// "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
// "importsNotUsedAsValues": "remove", /* Specify emit/checking behavior for imports that are only used for types. */
// "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
// "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */
// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
// "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */
// "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */
// "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
// "newLine": "crlf", /* Set the newline character for emitting files. */
// "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
// "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */
// "noEmitOnError": true, /* Disable emitting files if any type checking errors are reported. */
// "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */
// "declarationDir": "./", /* Specify the output directory for generated declaration files. */
// "preserveValueImports": true, /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */
/* Interop Constraints */
// "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */
// "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */
"esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
// "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
"forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
/* Type Checking */
"strict": true /* Enable all strict type-checking options. */,
// "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */
// "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */
// "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
// "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
// "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */
// "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */
// "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */
// "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */
// "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */
// "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */
// "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */
// "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */
// "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */
// "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */
// "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */
// "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */
// "allowUnusedLabels": true, /* Disable error reporting for unused labels. */
// "allowUnreachableCode": true, /* Disable error reporting for unreachable code. */
/* Completeness */
// "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */
"skipLibCheck": true /* Skip type checking all .d.ts files. */
}
}