Merge pull request #77 from Software-Developers-IRL/f/lastlink3

F/lastlink3 ala cart docs 0.0.9

Author: lastlink

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@funktechno/little-mermaid-2-the-sql",
-  "version": "0.0.8",
+  "version": "0.0.9",
   "description": "",
   "main": "./lib/index.js",
   "types": "./lib/index.d.ts",

readme.md

@@ -9,6 +9,131 @@
 ## Generating Mermaid erDiagram
 * see [samples](./samples/readme.md) for more information
 
+## Ala Cart
+1. `npm install --save @funktechno/little-mermaid-2-the-sql`
+1. Example
+    * from markdown content
+      ```typescript
+      import { GenerateSqlFromMermaid } from "@funktechno/little-mermaid-2-the-sql/lib/src/Library";
+      import { MarkdownContentResponseI } from "@funktechno/little-mermaid-2-the-sql/lib/src/types";
+
+      
+      const markdownContent:MarkdownContentResponseI ={
+        settings: {
+            database: "postgres",
+            outputName: "result",
+            isRaw: false,
+            src: ""
+        },
+        content:`
+        #Test
+        \`\`\`mermaid
+        erDiagram
+            %% comment 1
+            Persons {
+                int PersonID PK "NOT NULL"
+                varchar255 LastName
+                varchar255 FirstName
+                varchar255 Address
+                varchar255 City
+            }
+
+            %% comment 2
+            Orders {
+                int OrderID PK "NOT NULL"
+                int PersonID FK "NOT NULL"
+            }
+  
+            Persons ||--o{ Orders : "[Persons.PersonId] to [Orders.PersonId]"
+        \`\`\`
+        `
+      };
+
+      const sqlOutputs = GenerateSqlFromMermaid(markdownContent);
+      ```
+
+    * manual mermaid db model
+      ```typescript
+      import { DbParser } from "@funktechno/little-mermaid-2-the-sql/lib/src/generate-sql-ddl";
+      import erDb from "@funktechno/little-mermaid-2-the-sql/lib/src/mermaid/src/diagrams/er/erDb";
+
+      const db = erDb;
+
+      let entityName = "Persons";
+      // load mermaid db with entities
+      db.addEntity(entityName);
+      let attributes:DbEntityAttributesDefinition[] = [
+        {
+          attributeName: "PersonID",
+          attributeKeyType: "PK",
+          attributeType: "int",
+          attributeComment: "NOT NULL"
+        },
+        {
+          attributeName: "LastName",
+          attributeType: "varchar255"
+        },
+        {
+          attributeName: "FirstName",
+          attributeType: "varchar255"
+        },
+        {
+          attributeName: "Address",
+          attributeType: "varchar255"
+        },
+        {
+          attributeName: "City",
+          attributeType: "varchar255"
+        }
+      ];
+      db.addAttributes(entityName,attributes);
+
+      entityName = "Orders";
+      db.addEntity(entityName);
+      attributes = [
+        {
+          attributeName: "OrderID",
+          attributeKeyType: "PK",
+          attributeType: "int",
+          attributeComment: "NOT NULL"
+        },
+        {
+          attributeName: "PersonID",
+          attributeKeyType: "FK",
+          attributeType: "int",
+          attributeComment: "NOT NULL"
+        }
+      ];
+      db.addAttributes(entityName,attributes);
+
+      const relSpec:DbRelSpec= {
+        cardA: "ZERO_OR_MORE",
+        cardB: "ONLY_ONE",
+        relType: "IDENTIFYING"
+      };
+
+      db.addRelationship("Persons", `[Persons.PersonId] to [${entityName}.PersonId]`, entityName, relSpec);
+      const ddlSyntax = new DbParser('sqlite', db).getSQLDataDefinition();
+      ```
+    * sql output
+      ```sql
+      CREATE TABLE "Persons" (
+        "City" varchar(255),
+        "Address" varchar(255),
+        "FirstName" varchar(255),
+        "LastName" varchar(255),
+        "PersonID" int NOT NULL,
+        PRIMARY KEY("PersonID")
+      );
+
+      CREATE TABLE "Orders" (
+        "PersonID" int NOT NULL,
+        "OrderID" int NOT NULL,
+        PRIMARY KEY("OrderID"),
+        FOREIGN KEY ("PersonId") REFERENCES "Persons"("PersonId")
+      );
+      ```
+
 ## Development
 
 1. git clone repo

src/mermaid/src/diagrams/er/erDb.ts

@@ -4,6 +4,7 @@ import {
   DbEntityAttributesDefinition,
   DbEntityDefinition,
   DbRelationshipDefinition,
+  DbRelSpec,
 } from "../../../../types";
 // import mermaidAPI from '../../mermaidAPI';
 // import * as configApi from '../../../../../deps/mermaid/src/config'
@@ -69,7 +70,7 @@ const addRelationship = function (
   entA: string,
   rolA: string,
   entB: string,
-  rSpec: string
+  rSpec: DbRelSpec
 ) {
   const rel: DbRelationshipDefinition = {
     entityA: entA,

src/types/index.ts

@@ -24,32 +24,38 @@ export interface DiagramDefinition {
 export interface DbEntityAttributesDefinition {
   attributeType?: string;
   attributeName?: string;
-  attributeKeyType?: string;
+  attributeKeyType?: "PK" | "FK";
   attributeComment?: string;
 }
 
 export interface DbEntityDefinition {
   attributes: DbEntityAttributesDefinition[];
 }
 
+export interface DbRelSpec {
+  cardA: string;
+  cardB: string;
+  relType: string;
+}
+
 export interface DbRelationshipDefinition {
   entityA: string;
   roleA: string;
   entityB: string;
-  relSpec: string;
+  relSpec: DbRelSpec;
 }
 
 export interface DbDefinition {
   Cardinality: Record<string, string>;
   Identification: Record<string, string>;
   addEntity: (name: string) => void;
-  addAttributes: (entityName: string, attribs: any[]) => void;
+  addAttributes: (entityName: string, attribs: DbEntityAttributesDefinition[]) => void;
   getEntities: () => Record<string, DbEntityDefinition>;
   addRelationship: (
     entA: string,
     rolA: string,
     entB: string,
-    rSpec: string
+    rSpec: DbRelSpec
   ) => void;
   getRelationships: () => DbRelationshipDefinition[];
   clear: () => void;

tests/data/results/GenerateSqlFromMermaid.json

@@ -0,0 +1 @@
+{}

tests/data/results/getSQLDataDefinition.json

@@ -0,0 +1,3 @@
+{
+    "Generate DDL examples Should generate create table SQL syntax": "CREATE TABLE \"Persons\" (\n\t\"City\" varchar(255),\n\t\"Address\" varchar(255),\n\t\"FirstName\" varchar(255),\n\t\"LastName\" varchar(255),\n\t\"PersonID\" int NOT NULL,\n\tPRIMARY KEY(\"PersonID\")\n);\n\nCREATE TABLE \"Orders\" (\n\t\"PersonID\" int NOT NULL,\n\t\"OrderID\" int NOT NULL,\n\tPRIMARY KEY(\"OrderID\"),\n\tFOREIGN KEY (\"PersonId\") REFERENCES \"Persons\"(\"PersonId\")\n);\n\n"
+}

tests/generate-sql-ddl.spec.ts

@@ -0,0 +1,53 @@
+import { getExpected, updateExpected } from "../utils/helper";
+import { GenerateSqlFromMermaid } from "../../src/Library";
+import { MarkdownContentResponseI } from "../../src/types";
+
+const dataSource = "GenerateSqlFromMermaid";
+
+describe("Generate DDL examples from markdown", () => {
+    it("Create DLL", async () => {
+      const markdownContent:MarkdownContentResponseI ={
+        settings: {
+            database: "postgres",
+            outputName: "result",
+            isRaw: false,
+            src: ""
+        },
+        content:`
+        #Test
+        \`\`\`mermaid
+        erDiagram
+            %% comment 1
+            Persons {
+                int PersonID PK "NOT NULL"
+                varchar255 LastName
+                varchar255 FirstName
+                varchar255 Address
+                varchar255 City
+            }
+
+            %% comment 2
+            Orders {
+                int OrderID PK "NOT NULL"
+                int PersonID FK "NOT NULL"
+            }
+  
+            Persons ||--o{ Orders : "[Persons.PersonId] to [Orders.PersonId]"
+        \`\`\`
+        `
+      };
+      // junit compile error for require parser.js export
+    //   const sqlOutputs = GenerateSqlFromMermaid(markdownContent);
+  
+    //   const dataKey = expect.getState().currentTestName || "unknown";
+  
+    //   const expectedResult = await getExpected(dataSource, dataKey);
+  
+    //   if (sqlOutputs != expectedResult) {
+    //     await updateExpected(dataSource, dataKey, sqlOutputs);
+    //   }
+  
+    //   expect(sqlOutputs).toStrictEqual(expectedResult);
+    });
+  });
+  

tests/src/Library.spec.ts

@@ -0,0 +1,84 @@
+import { DbParser } from "../../src/generate-sql-ddl";
+import erDb from "../../src/mermaid/src/diagrams/er/erDb";
+import { DbEntityAttributesDefinition, DbRelSpec } from "../../src/types";
+import { getExpected, updateExpected } from "../utils/helper";
+import * as fs from "fs";
+
+const dataSource = "getSQLDataDefinition";
+describe("Generate DDL examples", () => {
+  it("Should generate create table SQL syntax", async () => {
+    const db = erDb;
+    let entityName = "Persons";
+    db.addEntity(entityName);
+    let attributes:DbEntityAttributesDefinition[] = [
+      {
+        attributeName: "PersonID",
+        attributeKeyType: "PK",
+        attributeType: "int",
+        attributeComment: "NOT NULL"
+      },
+      {
+        attributeName: "LastName",
+        attributeType: "varchar255"
+      },
+      {
+        attributeName: "FirstName",
+        attributeType: "varchar255"
+      },
+      {
+        attributeName: "Address",
+        attributeType: "varchar255"
+      },
+      {
+        attributeName: "City",
+        attributeType: "varchar255"
+      }
+    ];
+    db.addAttributes(entityName,attributes);
+
+    entityName = "Orders";
+    db.addEntity(entityName);
+    attributes = [
+      {
+        attributeName: "OrderID",
+        attributeKeyType: "PK",
+        attributeType: "int",
+        attributeComment: "NOT NULL"
+      },
+      {
+        attributeName: "PersonID",
+        attributeKeyType: "FK",
+        attributeType: "int",
+        attributeComment: "NOT NULL"
+      }
+    ];
+    db.addAttributes(entityName,attributes);
+
+    const relSpec:DbRelSpec= {
+      cardA: "ZERO_OR_MORE",
+      cardB: "ONLY_ONE",
+      relType: "IDENTIFYING"
+    };
+
+    db.addRelationship("Persons", `[Persons.PersonId] to [${entityName}.PersonId]`,entityName, relSpec);
+    // `erDiagram artists { }`;
+    const ddlSyntax = new DbParser("sqlite", db).getSQLDataDefinition();
+
+    const dataKey = expect.getState().currentTestName || "unknown";
+
+    const expectedResult = await getExpected(dataSource, dataKey);
+
+    if (ddlSyntax != expectedResult) {
+      await updateExpected(dataSource, dataKey, ddlSyntax);
+    }
+
+    // console.log(result);
+    expect(ddlSyntax).toStrictEqual(expectedResult);
+    // expect(ddlSyntax).toBe('CREATE TABLE artists');
+
+    // await fs.writeFileSync(
+    //   "output-sqlite.sql",
+    //   ddlSyntax
+    // );
+  });
+});

tests/src/generate-sql-ddl.spec.ts

@@ -0,0 +1,35 @@
+/* eslint-disable @typescript-eslint/no-var-requires */
+// import {fs} from "fs";
+import * as fs from "fs";
+// const fs = require("fs");
+const path = require("path");
+const base_DIR = path.join(__dirname, "../data/results");
+
+export async function getExpectedDict<T>(testData: string): Promise<Record<string, T | null>> {
+    const filePath = path.join(base_DIR, testData + ".json");
+    console.log(filePath);
+    if (await fs.existsSync(filePath)) {
+        const expectedResults: Record<string, T> = await JSON.parse(fs.readFileSync(filePath, "utf8"));
+        return expectedResults;
+    } else
+        return {};
+}
+
+export async function getExpected<T>(testData: string, key: string): Promise<T | null> {
+    const expectedResults = await getExpectedDict<T>(testData);
+    if (expectedResults[key]) {
+        return expectedResults[key];
+    } else {
+        return null;
+    }
+}
+
+export async function updateExpected<T>(testData: string, key: string, result: T | null) {
+    const expectedResults = await getExpectedDict<T>(testData);
+
+    expectedResults[key] = result;
+
+    const filePath = path.join(base_DIR, testData + ".json");
+    const stringResults = JSON.stringify(expectedResults, null, 4);
+    await fs.writeFileSync(filePath, stringResults);
+}