src/db.ts

@@ -23,9 +23,9 @@ export class DB {
         return this.handler;
     }
 
-    async sync() {
+    async sync(force = false) {
         let handler = this.getHandler();
-        await handler.syncDB(this, handler);
+        await handler.syncDB(this, handler, force);
         //this.tables.forEach(t=>{
         //    console.log(handler.builders.query(handler.querys.create(handler,t)));
         //})
@@ -36,6 +36,11 @@ export class DB {
         this.tables.push(tabel);
         return tabel;
     }
+
+    getTable(name:string){
+        for(let i = 0; i < this.tables.length; i++) if(this.tables[i].dbLangTableName == name) return this.tables[i];
+        return null;
+    }
 }
 
 export class Attribute {
@@ -44,7 +49,7 @@ export class Attribute {
     ops: attributeSettings;
     type: Datatype;
     constructor(name: string, table: Table, type: Datatype, ops: attributeSettings) {
-        this.name = name;
+        this.name = name.toLowerCase();
         this.type = type;
         this.table = table;
         this.ops = ops;
@@ -58,7 +63,7 @@ export class Attribute {
         }
         if (ops.unique != null) {
             table.addConstraint(new uniqueConstraint(
-                table.dbLangDatabaseInstance.name + "_" + table.dbLangTableName + " " + name + "_unique_constraint",
+                table.dbLangDatabaseInstance.name + "_" + table.dbLangTableName + "_" + name + "_unique_constraint",
                 [this]
             ))
         }
@@ -98,6 +103,7 @@ export class Table {
         return handler.builders.escapeID(this.dbLangTableName);
     }
     addAttribute(name: string, type: Datatype, ops: attributeSettings = {}, noErrorOnNameConflict = false) {
+        name = name.toLowerCase();
         if (this.dbLangTableAttributes[name] != null) throw new Error("You are tring to create an Attribute twise!");
         let attr = new Attribute(name, this, type, ops);
         this.dbLangTableAttributes[name] = attr;

src/dbStructure.ts

@@ -53,14 +53,14 @@ export interface Constraint{
     name: string;
     serialize(handler: Handler): QueryBuilder;
     uses(attr: Attribute): boolean;
-    check(attr:Table): boolean | string; 
+    check(table: Table): boolean | string;
 }
 
 export class checkConstraint implements Constraint {
     checkQuery: BooleanModifier;
     name: string;
     constructor(name: string, check: BooleanModifier) {
-        this.name = name;
+        this.name = name.toLowerCase();
         this.checkQuery = check;
     }
     check(attr: Table): boolean {
@@ -78,12 +78,13 @@ export class uniqueConstraint implements Constraint{
     name: string;
     attrs: Attribute[];
     constructor(name: string, attrs: Attribute[]) {
-        this.name = name;
+        this.name = name.toLowerCase();
         this.attrs = attrs;
     }
     check(table: Table): boolean | string {
         for (let i = 0; i < this.attrs.length; i++) {
             if (this.attrs[i].ops.primaryKey) return "Can not combine unique Constraint and primary key";
+            if (this.attrs[i].table != table) return "Referencing Attributes must be in host Table.";
         }
         return false;
     }
@@ -95,3 +96,32 @@ export class uniqueConstraint implements Constraint{
     }
 
 }
+
+export class foreignConstraint implements Constraint {
+    name: string;
+    fromAttrs: Attribute[];
+    toAttrs: Attribute[];
+    constructor(name: string, from: Attribute[], to: Attribute[]) {
+        this.name = name.toLowerCase();
+        this.fromAttrs = from;
+        this.toAttrs = to;
+    }
+    serialize(handler: Handler): QueryBuilder {
+        throw new Error("Method not implemented.");
+    }
+    uses(attr: Attribute): boolean {
+        throw new Error("Method not implemented.");
+    }
+    check(t: Table): string | boolean {
+        let table = this.toAttrs[0].table;
+        for (let i = 0; i < this.toAttrs.length; i++) {
+            if (table != this.toAttrs[i].table) return "Referenced Attributes must be in one Table.";
+            if (this.toAttrs[i].ops.primaryKey) return "Can not reference non primary keys.";
+        }
+        for (let i = 0; i < this.fromAttrs.length; i++) {
+            if (this.fromAttrs[i].table != t) return "Referencing Attributes must be in host Table.";
+        }
+        return false;
+    }
+
+}

src/defaultHandler.ts

@@ -19,37 +19,89 @@ export class Handler {
 
         let [key, constraints] = await db.query(handler.builders.query(gd));
 
+        let allTables = (await db.query(handler.builders.query(handler.querys.listTables(handler, db)))).map((d: any) => d.TABLE_NAME);
 
-        let tableData = [];
+        let tableData: { [key: string]: any; } = {};
         for (let i = 0; i < db.tables.length; i++) {
             const table = db.tables[i];
             try {
                 const tableDataBuilder = new QueryBuilder();
                 tableDataBuilder.addCode("DESCRIBE ");
                 tableDataBuilder.addCode(table.serialize(handler));
-                tableData[i] = Object.fromEntries((await db.query(handler.builders.query(tableDataBuilder))).map((d: any) => [d.Field, d]));
+                tableData[table.dbLangTableName.toLowerCase()] =
+                    Object.fromEntries((await db.query(handler.builders.query(tableDataBuilder))).map((d: any) => [d.Field.toLowerCase(), d]));
             } catch (_) {
-                tableData[i] = null;
+                tableData[table.dbLangTableName.toLowerCase()] = null;
             }
         }
 
         const del = new QueryBuilder();
         const create = new QueryBuilder();
 
+        function checkUniqueIsVaild(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 uniqueConstraint) {
+                    let attrs = c.attrs.map(a => a.name);
+                    console.log(attrs);
+                    let found = 0;
+                    for (let j = 0; j < key.length; j++) {
+                        if (
+                            key[j].CONSTRAINT_NAME == n
+                            && key[j].TABLE_NAME == table
+                        ) {
+                            if (attrs.includes(key[j].COLUMN_NAME.toLowerCase())) found++;
+                            else return false;
+                        }
+                    }
+                    return found == attrs.length;
+                }
+            }
+            return false;
+        }
+        function checkUniqueExists(tabel: Table, c: uniqueConstraint) {
+            let attrs = c.attrs.map(a => a.name);
+            let found = 0;
+            for (let j = 0; j < key.length; j++) {
+                if (
+                    key[j].CONSTRAINT_NAME.toLowerCase() == c.name
+                    && key[j].TABLE_NAME == tabel.dbLangTableName
+                ) {
+                    if (attrs.includes(key[j].COLUMN_NAME.toLowerCase())) found++;
+                    else return false;
+                }
+            }
+            return found == attrs.length;
+        }
+
+        //delete check and unused/false(unique, foreign) constraints
         for (let i = 0; i < constraints.length; i++) {
             const c = constraints[i];
             if (c.CONSTRAINT_TYPE == "CHECK") {
                 del.appendEnding(handler.querys.removeCheck(handler, c.TABLE_NAME, c.CONSTRAINT_NAME));
+            } else if (c.CONSTRAINT_TYPE == "UNIQUE") {
+                if (
+                    (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) {
+                if (typeof tableData[c.TABLE_NAME.toLowerCase()] == "undefined") 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(a: Attribute) {
+        function freeForUpdate(attr: string, table: string) {
             for (let i = 0; i < key.length; i++) {
                 const k = key[i];
                 if (
-                    k.REFERENCED_TABLE_NAME == a.table.dbLangTableName
-                    && k.REFERENCED_TABLE_NAME == a.name
+                    k.REFERENCED_TABLE_NAME == table
+                    && k.REFERENCED_COLUMN_NAME.toLowerCase() == attr.toLowerCase()
                 ) {
                     del.appendEnding(handler.querys.removeForeignKey(handler, k.TABLE_NAME, k.CONSTRAINT_NAME));
                 }
@@ -59,7 +111,18 @@ export class Handler {
         //create tables
         for (let i = 0; i < db.tables.length; i++) {
             const table = db.tables[i];
-            const tableD = tableData[i];
+            const tableD = tableData[table.dbLangTableName.toLowerCase()];
+            //delete unused Columns
+            if (deleteInDB) {
+                let keys = Object.keys(tableD);
+                for (let i = 0; i < keys.length; i++) {
+                    if (table.dbLangTableAttributes[keys[i]] == null) {
+                        freeForUpdate(keys[i].toLowerCase(), table.dbLangTableName);
+                        create.appendEnding(handler.querys.removeColumn(handler, table, keys[i]));
+                    }
+                }
+            }
+            //add/mofify columns
             let changePrimary = false;
             if (tableD == null) {
                 create.appendEnding(handler.querys.create(handler, table));
@@ -82,30 +145,35 @@ export class Handler {
                             a.ops.default, attrData.Default, "|",
                             (!!a.ops.notNull || !!a.ops.autoIncrement || !!a.ops.primaryKey), (attrData.Null == "NO"), "|",
                             (!!a.ops.autoIncrement), (attrData.Extra == "auto_increment"));
-                        freeForUpdate(a);
+                        freeForUpdate(a.name, a.table.dbLangTableName);
                         create.appendEnding(handler.querys.changeColumn(handler, a));
                     }
                     if (attrData == null) {
                         changePrimary = true;
                     } else {
                         if ((attrData.Key == "PRI") != (!!a.ops.primaryKey)) {
-                            freeForUpdate(a);
+                            freeForUpdate(a.name, a.table.dbLangTableName);
                             changePrimary = true;
                         }
                     }
                 }
             }
             if (changePrimary) {
-                create.appendEnding(handler.querys.removePrimaryKey(handler, table));
+                create.appendEnding(handler.querys.removePrimaryKey(handler, table.dbLangTableName));
                 create.appendEnding(handler.querys.addPrimaryKey(handler, table));
             }
             for (let j = 0; j < table.dbLangConstrains.length; j++) {
                 const c = table.dbLangConstrains[j];
                 if (c instanceof checkConstraint) {
                     create.appendEnding(handler.querys.addCheck(handler, table, c));
+                } else if (c instanceof uniqueConstraint) {
+                    if (!checkUniqueExists(table, c)) {
+                        create.appendEnding(handler.querys.addUnique(handler, table, c));
                     }
                 }
-            // TODO: unique
+            }
+
+            // TODO: unique, foreignkey
         }
         if (!create.isEmpty()) del.append(create);
         if (!del.isEmpty()) await db.query(handler.builders.query(del));
@@ -140,6 +208,13 @@ export class Handler {
 
             return builder;
         },
+        listTables: (handler: Handler, db: DB) => {
+            const qb = new QueryBuilder();
+            qb.addCode(`SELECT * FROM information_schema.tables where TABLE_SCHEMA = `);
+            qb.addInjection(db.name);
+            qb.addCode(` and TABLE_TYPE  = "BASE TABLE"`);
+            return qb;
+        },
         create: (handler: Handler, table: Table): QueryBuilder => {
             const builder = new QueryBuilder();
             builder.addCode(`create table if not exists ${table.toString(handler)}(`);
@@ -153,6 +228,13 @@ export class Handler {
             builder.addCode(")");
             return builder;
         },
+        deleteTable: (handler: Handler, table: string): QueryBuilder => {
+            const qb = new QueryBuilder();
+            qb.addCode(`DROP TABLE `);
+            qb.addCode(handler.builders.escapeID(table));
+            qb.addCode(` CASCADE`);
+            return qb;
+        },
         addColumn: (handler: Handler, attr: Attribute): QueryBuilder => {
             const builder = new QueryBuilder();
             builder.addCode(`alter table `);
@@ -172,9 +254,30 @@ export class Handler {
             builder.append(attr.serializeSettings(handler));
             return builder;
         },
-        addForeignKey: (handler: Handler, table: Table) => {
+        removeColumn: (handler: Handler, tabel: Table, attr: string) => {
             const builder = new QueryBuilder();
-
+            builder.addCode("ALTER TABLE ");
+            builder.addCode(tabel.serialize(handler));
+            builder.addCode(" DROP COLUMN ");
+            builder.addCode(handler.builders.escapeID(attr));
+            return builder;
+        },
+        addForeignKey: (handler: Handler, attr: Attribute, target: Attribute) => {
+            const builder = new QueryBuilder();
+            builder.addCode("ALTER TABLE ");
+            builder.addCode(attr.table.serialize(handler));
+            builder.addCode(" ADD CONSTRAINT ");
+            builder.addCode(handler.builders.escapeID(attr.table.dbLangDatabaseInstance.name
+                + "_" + attr.table.dbLangTableName
+                + "_" + attr.name + "_foreign_key_constraint_to_"
+                + 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("(");
+            builder.addCode(target.serialize(handler));
+            builder.addCode(")");
             return builder;
         },
         removeForeignKey: (handler: Handler, tablenName: string, name: string) => {
@@ -203,10 +306,10 @@ export class Handler {
             qb.addCode(")");
             return qb;
         },
-        removePrimaryKey: (handler: Handler, table: Table) => {
+        removePrimaryKey: (handler: Handler, table: string) => {
             const qb = new QueryBuilder();
             qb.addCode("ALTER TABLE ");
-            qb.addCode(table.serialize(handler));
+            qb.addCode(handler.builders.escapeID(table));
             qb.addCode(" DROP INDEX IF EXISTS `PRIMARY`");
             return qb;
         },