src/db.ts

@@ -1,5 +1,5 @@
 import mariadb from 'mariadb';
-import { checkConstraint, Constraint, Datatype, uniqueConstraint } from './dbStructure';
+import { checkConstraint, Constraint, Datatype, foreignConstraint, uniqueConstraint } from './dbStructure';
 import { Handler } from './defaultHandler';
 import { Query } from './query';
 import { attributeSettings, extendedAttributeSettings, onAction } from './types';
@@ -37,8 +37,8 @@ export class DB {
         return tabel;
     }
 
-    getTable(name:string){
+    getTable(name: string) {
-        for(let i = 0; i < this.tables.length; i++) if(this.tables[i].dbLangTableName == name) return this.tables[i];
+        for (let i = 0; i < this.tables.length; i++) if (this.tables[i].dbLangTableName == name) return this.tables[i];
         return null;
     }
 }
@@ -55,7 +55,7 @@ export class Attribute {
         this.ops = ops;
 
         if (ops.check != null) {
-            if(typeof ops.check == "function")ops.check = ops.check(this);
+            if (typeof ops.check == "function") ops.check = ops.check(this);
             table.addConstraint(new checkConstraint(
                 table.dbLangDatabaseInstance.name + "_" + table.dbLangTableName + "_" + name + "_check_constraint",
                 ops.check
@@ -67,6 +67,15 @@ export class Attribute {
                 [this]
             ))
         }
+        if (ops.foreginKey != null) {
+            table.addConstraint(new foreignConstraint(
+                table.dbLangDatabaseInstance.name + "_" + table.dbLangTableName + "_" + name + "_foreign_constraint_to_"+ops.foreginKey.link.name,
+                [this],
+                [ops.foreginKey.link],
+                ops.foreginKey.onDelete,
+                ops.foreginKey.onUpdate
+            ));
+        }
     }
     serializeDatatype(handler: Handler) {
         return this.type.serialize(handler);

src/dbStructure.ts

@@ -1,7 +1,7 @@
 import { Attribute, Table } from "./db";
 import { Handler } from "./defaultHandler";
 import { QueryBuilder } from "./query";
-import { allModifierInput, primaryData, serializeReturn } from "./types";
+import { allModifierInput, onAction, primaryData, serializeReturn } from "./types";
 
 export class Datatype {
     type: string;
@@ -101,10 +101,14 @@ export class foreignConstraint implements Constraint {
     name: string;
     fromAttrs: Attribute[];
     toAttrs: Attribute[];
-    constructor(name: string, from: Attribute[], to: Attribute[]) {
+    onUpdate: onAction;
+    onDelete: onAction;
+    constructor(name: string, from: Attribute[], to: Attribute[], onDelete: onAction = onAction.nothing, onUpdate: onAction = onAction.nothing) {
         this.name = name.toLowerCase();
         this.fromAttrs = from;
         this.toAttrs = to;
+        this.onUpdate = onUpdate;
+        this.onDelete = onDelete;
     }
     serialize(handler: Handler): QueryBuilder {
         throw new Error("Method not implemented.");

src/defaultHandler.ts

@@ -1,7 +1,7 @@
 import { Attribute, DB, Table } from "./db"
-import { Aggregation, checkConstraint, Constraint, Datatype, Modifier, uniqueConstraint } from "./dbStructure"
+import { Aggregation, checkConstraint, Constraint, Datatype, foreignConstraint, Modifier, uniqueConstraint } from "./dbStructure"
 import { Query, QueryBuilder, selectQuery } from "./query"
-import { allModifierInput, primaryData, serializeReturn } from "./types"
+import { allModifierInput, onAction, primaryData, serializeReturn } from "./types"
 
 export class Handler {
     async syncDB(db: DB, handler: Handler, deleteInDB: boolean = false) {
@@ -19,8 +19,10 @@ export class Handler {
 
         let [key, constraints] = await db.query(handler.builders.query(gd));
 
+        //Table List
         let allTables = (await db.query(handler.builders.query(handler.querys.listTables(handler, db)))).map((d: any) => d.TABLE_NAME);
 
+        // gether Table Schematics
         let tableData: { [key: string]: any; } = {};
         for (let i = 0; i < db.tables.length; i++) {
             const table = db.tables[i];
@@ -45,7 +47,6 @@ export class Handler {
                 const c = t.dbLangConstrains[i];
                 if (c.name == n.toLowerCase() && c instanceof uniqueConstraint) {
                     let attrs = c.attrs.map(a => a.name);
-                    console.log(attrs);
                     let found = 0;
                     for (let j = 0; j < key.length; j++) {
                         if (
@@ -61,6 +62,35 @@ export class Handler {
             }
             return false;
         }
+
+        function checkForeignIsVaild(n: string, table: string) {
+            let t = db.getTable(table);
+            if (t == null) return false;
+            for (let i = 0; i < t.dbLangConstrains.length; i++) {
+                const c = t.dbLangConstrains[i];
+                if (c.name == n.toLowerCase() && c instanceof foreignConstraint) {
+                    let fromAttrs = c.fromAttrs.map(a => a.name);
+                    let toAttrs = c.toAttrs.map(a => a.name);
+                    let refTable = c.toAttrs[0].table.dbLangTableName;
+                    let found = 0;
+                    for (let j = 0; j < key.length; j++) {
+                        if (
+                            key[j].CONSTRAINT_NAME == n
+                            && key[j].TABLE_NAME == table
+                            && key[j].REFERENCED_TABLE_NAME == refTable
+                        ) {
+                            let inF = fromAttrs.indexOf(key[j].COLUMN_NAME.toLowerCase());
+                            let inT = toAttrs.indexOf(key[j].REFERENCED_COLUMN_NAME.toLowerCase());
+                            if (inF != -1 && inT == inF) found++;
+                            else return false;
+                        }
+                    }
+                    return found == fromAttrs.length && found == toAttrs.length;
+                }
+            }
+            return false;
+        }
+
         function checkUniqueExists(tabel: Table, c: uniqueConstraint) {
             let attrs = c.attrs.map(a => a.name);
             let found = 0;
@@ -75,6 +105,25 @@ export class Handler {
             }
             return found == attrs.length;
         }
+        function checkForeignExists(tabel: Table, c: foreignConstraint) {
+            let fromAttrs = c.fromAttrs.map(a => a.name);
+            let toAttrs = c.toAttrs.map(a => a.name);
+            let refTable = c.toAttrs[0].table.dbLangTableName;
+            let found = 0;
+            for (let j = 0; j < key.length; j++) {
+                if (
+                    key[j].CONSTRAINT_NAME == c.name
+                    && key[j].TABLE_NAME == tabel.dbLangTableName
+                    && key[j].REFERENCED_TABLE_NAME == refTable
+                ) {
+                    let inF = fromAttrs.indexOf(key[j].COLUMN_NAME.toLowerCase());
+                    let inT = toAttrs.indexOf(key[j].REFERENCED_COLUMN_NAME.toLowerCase());
+                    if (inF != -1 && inT == inF) found++;
+                    else return false;
+                }
+            }
+            return found == fromAttrs.length && found == toAttrs.length;
+        }
 
         //delete check and unused/false(unique, foreign) constraints
         for (let i = 0; i < constraints.length; i++) {
@@ -86,15 +135,17 @@ export class Handler {
                     (typeof tableData[c.TABLE_NAME.toLowerCase()] == "undefined" && deleteInDB)
                     || !checkUniqueIsVaild(c.CONSTRAINT_NAME, c.TABLE_NAME)
                 ) del.appendEnding(handler.querys.removeUnique(handler, c.TABLE_NAME, c.CONSTRAINT_NAME));
-            } else if (c.CONSTRAINT_TYPE == "FOREIGN KEY" && deleteInDB) {
+            } else if (c.CONSTRAINT_TYPE == "FOREIGN KEY") {
-                if (typeof tableData[c.TABLE_NAME.toLowerCase()] == "undefined") del.appendEnding(handler.querys.removeForeignKey(handler, c.TABLE_NAME, c.CONSTRAINT_NAME));
+                if (
+                    (typeof tableData[c.TABLE_NAME.toLowerCase()] == "undefined" && deleteInDB)
+                    || !checkForeignIsVaild(c.CONSTRAINT_NAME, c.TABLE_NAME)
+                ) del.appendEnding(handler.querys.removeForeignKey(handler, c.TABLE_NAME, c.CONSTRAINT_NAME));
             }
         }
         //delete unused Tables
         if (deleteInDB) for (let i = 0; i < allTables.length; i++) {
             if (typeof tableData[allTables[i].toLowerCase()] == "undefined") del.appendEnding(handler.querys.deleteTable(handler, allTables[i]));
         }
-        // TODO: delete old constraints/tables
 
         function freeForUpdate(attr: string, table: string) {
             for (let i = 0; i < key.length; i++) {
@@ -113,7 +164,7 @@ export class Handler {
             const table = db.tables[i];
             const tableD = tableData[table.dbLangTableName.toLowerCase()];
             //delete unused Columns
-            if (deleteInDB) {
+            if (deleteInDB && tableD != null) {
                 let keys = Object.keys(tableD);
                 for (let i = 0; i < keys.length; i++) {
                     if (table.dbLangTableAttributes[keys[i]] == null) {
@@ -141,10 +192,10 @@ export class Handler {
                         (!!a.ops.notNull || !!a.ops.autoIncrement || !!a.ops.primaryKey) != (attrData.Null == "NO") ||
                         (!!a.ops.autoIncrement) != (attrData.Extra == "auto_increment")
                     ) {
-                        console.log(!handler.builders.compareDatatypes(handler, a.type, attrData.Type), "|",
+                        /*console.log(!handler.builders.compareDatatypes(handler, a.type, attrData.Type), "|",
                             a.ops.default, attrData.Default, "|",
                             (!!a.ops.notNull || !!a.ops.autoIncrement || !!a.ops.primaryKey), (attrData.Null == "NO"), "|",
-                            (!!a.ops.autoIncrement), (attrData.Extra == "auto_increment"));
+                            (!!a.ops.autoIncrement), (attrData.Extra == "auto_increment"));*/
                         freeForUpdate(a.name, a.table.dbLangTableName);
                         create.appendEnding(handler.querys.changeColumn(handler, a));
                     }
@@ -170,10 +221,12 @@ export class Handler {
                     if (!checkUniqueExists(table, c)) {
                         create.appendEnding(handler.querys.addUnique(handler, table, c));
                     }
+                } else if (c instanceof foreignConstraint) {
+                    if (!checkForeignExists(table, c)) {
+                        create.appendEnding(handler.querys.addForeignKey(handler, table, c));
+                    }
                 }
             }
-
-            // TODO: unique, foreignkey
         }
         if (!create.isEmpty()) del.append(create);
         if (!del.isEmpty()) await db.query(handler.builders.query(del));
@@ -262,22 +315,29 @@ export class Handler {
             builder.addCode(handler.builders.escapeID(attr));
             return builder;
         },
-        addForeignKey: (handler: Handler, attr: Attribute, target: Attribute) => {
+        addForeignKey: (handler: Handler, table: Table, c: foreignConstraint) => {
             const builder = new QueryBuilder();
             builder.addCode("ALTER TABLE ");
-            builder.addCode(attr.table.serialize(handler));
+            builder.addCode(table.serialize(handler));
             builder.addCode(" ADD CONSTRAINT ");
-            builder.addCode(handler.builders.escapeID(attr.table.dbLangDatabaseInstance.name
+            builder.addCode(handler.builders.escapeID(c.name));
-                + "_" + attr.table.dbLangTableName
+            builder.addCode(" FOREIGN KEY (");
-                + "_" + attr.name + "_foreign_key_constraint_to_"
+            builder.addCodeCommaSeperated(c.fromAttrs.map(a => a.serialize(handler)));
-                + target.table.dbLangTableName + "_" + target.name));
-            builder.addCode("FOREIGN KEY (");
-            builder.addCode(attr.serialize(handler));
             builder.addCode(") REFERENCES ");
-            builder.addCode(target.table.serialize(handler));
+            builder.addCode(c.toAttrs[0].table.serialize(handler));
             builder.addCode("(");
-            builder.addCode(target.serialize(handler));
+            builder.addCodeCommaSeperated(c.toAttrs.map(a => a.serialize(handler)));
             builder.addCode(")");
+
+            if (c.onUpdate == onAction.cascade) builder.addCode(" ON UPDATE CASCADE");
+            if (c.onUpdate == onAction.noAction) builder.addCode(" ON UPDATE NO ACTION");
+            if (c.onUpdate == onAction.setDefault) builder.addCode(" ON UPDATE SET DEFUALT");
+            if (c.onUpdate == onAction.setNull) builder.addCode(" ON UPDATE SET NULL");
+
+            if (c.onDelete == onAction.cascade) builder.addCode(" ON DELETE CASCADE");
+            if (c.onDelete == onAction.noAction) builder.addCode(" ON DELETE NO ACTION");
+            if (c.onDelete == onAction.setDefault) builder.addCode(" ON DELETE SET DEFUALT");
+            if (c.onDelete == onAction.setNull) builder.addCode(" ON DELETE SET NULL");
             return builder;
         },
         removeForeignKey: (handler: Handler, tablenName: string, name: string) => {

src/types.ts

@@ -42,6 +42,7 @@ export type extendedAttributeSettings = {
 }
 
 export enum onAction {
+    nothing,
     cascade,
     noAction,
     setNull,