states instead of files

README.md

@@ -37,10 +37,19 @@ Maven:
 In your resources directory you should create a `cmig` directory,
 and inside it new XML file, for instance `master.xml`:
 ```xml
-<files>
-  <file id="1" author="h1alexbel">001-initial.cql</file>
-  <file id="2" author="somebodyelse">002-clicks-keyspace.cql</file>
-</files>
+<states>
+  <changeState id="1" author="h1alexbel">
+    <files>
+      <file path="001-initial-keyspace.cql"/>
+      <file path="002-queries-table.cql"/>
+    </files>
+  </changeState>
+  <changeState id="2" author="h1alexbel">
+    <files>
+      <file path="003-stuff.cql"/>
+    </files>
+  </changeState>
+</states>
 ```
 
 **Inside all the files you must have only one operation**.

src/main/java/io/github/eocqrs/cmig/Master.java

@@ -29,9 +29,13 @@
 import io.github.eocqrs.cmig.session.InFile;
 import org.cactoos.Scalar;
 import org.cactoos.io.ResourceOf;
+/*
+ * @todo #32:45m/DEV Master is set of states inside XML document.
+ */
+
 
 /**
- * Master files.
+ * Set of States.
  *
  * @author Aliaksei Bialiauski (abialiauski.dev@gmail.com)
  * @since 0.0.0
@@ -53,7 +57,10 @@ public final class Master implements Scalar<String> {
    * @param doc XML
    * @param cs  Cassandra
    */
-  public Master(final XML doc, final Cassandra cs) {
+  public Master(
+    final XML doc,
+    final Cassandra cs
+  ) {
     this.xml = doc;
     this.cassandra = cs;
   }
@@ -82,7 +89,7 @@ public Master(
 
   @Override
   public String value() throws Exception {
-    new Names(this.xml).value()
+    new Names(this.xml, "").value()
       .forEach(file -> {
           try {
             new InFile(

src/main/java/io/github/eocqrs/cmig/meta/Ids.java → src/main/java/io/github/eocqrs/cmig/State.java

@@ -20,54 +20,21 @@
  * SOFTWARE.
  */
 
-package io.github.eocqrs.cmig.meta;
+package io.github.eocqrs.cmig;
 
-import com.jcabi.xml.XML;
-import com.jcabi.xml.XMLDocument;
-import org.cactoos.io.ResourceOf;
-
-import java.util.List;
+import org.cactoos.Scalar;
+/*
+ * @todo #32:30m/DEV design State interface
+ */
 
 /**
- * File IDs.
+ * State.
  *
  * @author Aliaksei Bialiauski (abialiauski.dev@gmail.com)
  * @since 0.0.0
  */
-public final class Ids implements XpathList {
-
-  /**
-   * XML.
-   */
-  private final XML xml;
-
-  /**
-   * Ctor.
-   *
-   * @param doc XML
-   */
-  public Ids(final XML doc) {
-    this.xml = doc;
-  }
-
-  /**
-   * Ctor.
-   *
-   * @param name File name
-   * @throws Exception if something went wrong
-   */
-  public Ids(final String name) throws Exception {
-    this(
-      new XMLDocument(
-        new ResourceOf(
-          name
-        ).stream()
-      )
-    );
-  }
+public interface State extends Scalar<String> {
 
   @Override
-  public List<String> value() throws Exception {
-    return this.xml.xpath("/files/file/@id");
-  }
+  String value() throws Exception;
 }

src/main/java/io/github/eocqrs/cmig/meta/Authors.java → src/main/java/io/github/eocqrs/cmig/meta/Author.java

@@ -24,50 +24,63 @@
 
 import com.jcabi.xml.XML;
 import com.jcabi.xml.XMLDocument;
+import org.cactoos.Scalar;
 import org.cactoos.io.ResourceOf;
 
-import java.util.List;
-
 /**
- * File authors.
+ * Author of State.
  *
  * @author Aliaksei Bialiauski (abialiauski.dev@gmail.com)
  * @since 0.0.0
  */
-public final class Authors implements XpathList {
+public final class Author implements Scalar<String> {
 
   /**
    * XML.
    */
   private final XML xml;
+  /**
+   * State ID.
+   */
+  private final String id;
 
   /**
    * Ctor.
    *
    * @param doc XML
+   * @param id  State ID
    */
-  public Authors(final XML doc) {
+  public Author(final XML doc, final String id) {
     this.xml = doc;
+    this.id = id;
   }
 
   /**
    * Ctor.
    *
    * @param name File name
+   * @param id   State ID
    * @throws Exception if something went wrong
    */
-  public Authors(final String name) throws Exception {
+  public Author(final String name, final String id)
+    throws Exception {
     this(
       new XMLDocument(
         new ResourceOf(
           name
         ).stream()
-      )
+      ),
+      id
     );
   }
 
   @Override
-  public List<String> value() throws Exception {
-    return this.xml.xpath("/files/file/@author");
+  public String value() throws Exception {
+    return this.xml.xpath(
+      "/states/changeState[@id='%s']/@author"
+        .formatted(
+          this.id
+        )
+    ).get(0);
   }
 }

src/main/java/io/github/eocqrs/cmig/meta/Names.java

@@ -29,7 +29,7 @@
 import java.util.List;
 
 /**
- * File names.
+ * File names of State.
  *
  * @author Aliaksei Bialiauski (abialiauski.dev@gmail.com)
  * @since 0.0.0
@@ -40,34 +40,48 @@ public final class Names implements XpathList {
    * XML.
    */
   private final XML xml;
+  /**
+   * State ID.
+   */
+  private final String id;
 
   /**
    * Ctor.
    *
    * @param doc XML
+   * @param id  State ID
    */
-  public Names(final XML doc) {
+  public Names(final XML doc, final String id) {
     this.xml = doc;
+    this.id = id;
   }
 
   /**
    * Ctor.
    *
    * @param name File name
+   * @param id   State ID
    * @throws Exception if something went wrong
    */
-  public Names(final String name) throws Exception {
+  public Names(final String name, final String id)
+    throws Exception {
     this(
       new XMLDocument(
         new ResourceOf(
           name
         ).stream()
-      )
+      ),
+      id
     );
   }
 
   @Override
   public List<String> value() throws Exception {
-    return this.xml.xpath("/files/file/text()");
+    return this.xml.xpath(
+      "/states/changeState[@id='%s']/files/file/@path"
+        .formatted(
+          this.id
+        )
+    );
   }
 }

src/main/java/io/github/eocqrs/cmig/sha/Sha.java

@@ -0,0 +1,87 @@
+/*
+ *  Copyright (c) 2023 Aliaksei Bialiauski, EO-CQRS
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package io.github.eocqrs.cmig.sha;
+
+import io.github.eocqrs.cmig.meta.Names;
+import org.cactoos.Text;
+import org.cactoos.bytes.Sha256DigestOf;
+import org.cactoos.io.InputOf;
+import org.cactoos.text.HexOf;
+
+import java.util.List;
+
+/**
+ * SHA256 for State.
+ *
+ * @author Aliaksei Bialiauski (0.0.0)
+ * @since 0.0.0
+ */
+public final class Sha implements Text {
+
+  /**
+   * State ID.
+   */
+  private final String id;
+  /**
+   * Master file.
+   */
+  private final String master;
+  /**
+   * CMIG directory.
+   */
+  private final String cmig;
+
+  /**
+   * Ctor.
+   * @param id State ID
+   * @param mst Master file
+   * @param cmg CMIG directory
+   */
+  public Sha(
+    final String id,
+    final String mst,
+    final String cmg
+  ) {
+    this.id = id;
+    this.master = mst;
+    this.cmig = cmg;
+  }
+
+  @Override
+  public String asString() throws Exception {
+    final List<String> contents = new StateChanges(
+      new Names(
+        this.master,
+        this.id
+      ),
+      this.cmig
+    ).value();
+    return new HexOf(
+      new Sha256DigestOf(
+        new InputOf(
+          contents.toString()
+        )
+      )
+    ).asString();
+  }
+}