/*
 * Copyright 2023-2024 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package rife.bld.extension;

import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import rife.bld.BaseProject;
import rife.bld.Project;
import rife.bld.blueprints.BaseProjectBlueprint;
import rife.bld.dependencies.VersionNumber;
import rife.tools.FileUtils;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Objects;
import java.util.logging.ConsoleHandler;
import java.util.logging.Level;
import java.util.logging.Logger;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Implements the GeneratedVersionTest class.
 *
 * @author <a href="https://erik.thauvin.net/">Erik C. Thauvin</a>
 * @since 1.0
 */
class GeneratedVersionTest {
    private final BaseProject PROJECT = new Project() {
        @Override
        public String pkg() {
            return "com.example";
        }

        @Override
        public String name() {
            return "MyExample";
        }

        @Override
        public VersionNumber version() {
            return new VersionNumber(2, 1, 3);
        }
    };

    @BeforeAll
    static void beforeAll() {
        var level = Level.ALL;
        var logger = Logger.getLogger("rife.bld.extension");
        var consoleHandler = new ConsoleHandler();
        consoleHandler.setLevel(level);
        logger.addHandler(consoleHandler);
        logger.setLevel(level);
        logger.setUseParentHandlers(false);
    }

    static void deleteOnExit(File folder) {
        folder.deleteOnExit();
        for (var f : Objects.requireNonNull(folder.listFiles())) {
            if (f.isDirectory()) {
                deleteOnExit(f);
            } else {
                f.deleteOnExit();
            }
        }
    }

    @Test
    void testBuildCustomTemplate() {
        var gv = new GeneratedVersion();
        gv.setProject(PROJECT);
        gv.setTemplate(new File(gv.getProject().srcTestResourcesDirectory().getAbsolutePath(), "version_test.txt"));
        gv.setPackageName("com.example.my");
        gv.setProjectName("My App");
        gv.setClassName("MyVersion");

        var t = gv.buildTemplate();
        assertThat(t.getContent()).isEqualTo("""
                package com.example.my;
                
                public final class MyVersion {
                    public static final int PROJECT = "My App";
                    public static final int MAJOR = 2;
                    public static final int MINOR = 1;
                    public static final int REVISION = 3;
                    public static final String QUALIFIER = "";
                
                    private MyVersion() {
                        // no-op
                    }
                }
                """);
    }

    @Test
    void testBuildTemplate() {
        var gv = new GeneratedVersion();
        gv.setProject(PROJECT);

        var t = gv.buildTemplate();
        assertThat(t).isNotNull();

        assertThat(gv.getProject()).isEqualTo(PROJECT);
        assertThat(gv.getPackageName()).isEqualTo(PROJECT.pkg());
        assertThat(gv.getProjectName()).isEqualTo(PROJECT.name());

        assertThat(t.getContent()).contains("package com.example;").contains("class GeneratedVersion")
                .contains("PROJECT = \"MyExample\";").contains("MAJOR = 2").contains("MINOR = 1")
                .contains("REVISION = 3").contains("QUALIFIER = \"\"").contains("VERSION = \"2.1.3\"")
                .contains("private GeneratedVersion");
    }

    @Test
    void testDirectories() {
        var foo = new File("foo");
        var bar = new File("bar");

        var op = new GeneratedVersionOperation().directory(foo);
        assertThat(op.generatedVersion().getDirectory()).as("as file").isEqualTo(foo);

        op = op.directory(bar.toPath());
        assertThat(op.generatedVersion().getDirectory()).as("as path").isEqualTo(bar);

        op = op.directory("foo");
        assertThat(op.generatedVersion().getDirectory()).as("as string").isEqualTo(foo);
    }

    @Test
    void testExample() throws Exception {
        var tmpDir = Files.createTempDirectory("bld-generated-version-example-").toFile();
        tmpDir.deleteOnExit();

        new GeneratedVersionOperation()
                .fromProject(new BaseProjectBlueprint(new File("examples"), "com.example", "Example"))
                .directory(tmpDir.getAbsolutePath())
                //.classTemplate(new File("examples", "my_app_version.txt"))
                .classTemplate(new File("examples", "version.txt"))
                .execute();

        deleteOnExit(tmpDir);

        var template = Path.of(tmpDir.getAbsolutePath(), "com", "example", "GeneratedVersion.java");
        assertThat(template).exists();

        var content = Files.readString(template);
        assertThat(content).contains("class GeneratedVersion").contains("PROJECT = \"Example\";")
                .contains("MAJOR = 0").contains("MINOR = 0").contains("REVISION = 1").contains("QUALIFIER = \"\"")
                .doesNotContain("ERASED!"); // only in default template
    }

    @Test
    void testExecute() throws Exception {
        var tmpDir = Files.createTempDirectory("bld-generated-version-execute-").toFile();
        tmpDir.deleteOnExit();

        new GeneratedVersionOperation()
                .fromProject(PROJECT)
                .directory(tmpDir.getAbsolutePath())
                .extension(".java")
                .classTemplate("src/test/resources/foo/version_test.txt")
                .packageName("")
                .className("MyVersion")
                .execute();

        deleteOnExit(tmpDir);

        var template = new File(tmpDir, "MyVersion.java");
        assertThat(template).exists();

        var content = Files.readString(template.toPath());
        assertThat(content).contains("class MyVersion")
                .contains("PROJECT = \"MyExample\";").contains("MAJOR = 2").contains("MINOR = 1")
                .contains("REVISION = 3").contains("QUALIFIER = \"\"").contains("private MyVersion")
                .doesNotContain("package");
    }

    @Test
    void testGeneratedVersion() {
        var gv = new GeneratedVersion();
        gv.setProject(PROJECT);
        gv.setTemplate(new File(gv.getProject().srcTestResourcesDirectory().getAbsolutePath(), "version_test.txt"));
        gv.setPackageName("com.example.cool");
        gv.setProjectName("Cool App");
        gv.setClassName("CoolVersion");
        gv.setDirectory(new File("build"));
        gv.setExtension(".java");

        assertThat(gv.getProject()).as("project").isEqualTo(PROJECT);
        assertThat(gv.getTemplate()).as("template").exists();
        assertThat(gv.getPackageName()).as("package name").isEqualTo("com.example.cool");
        assertThat(gv.getProjectName()).as("project name").isEqualTo("Cool App");
        assertThat(gv.getClassName()).as("class name").isEqualTo("CoolVersion");
        assertThat(gv.getExtension()).as("extension").isEqualTo(".java");
        assertThat(gv.getDirectory()).as("directory").isDirectory();
    }

    @Test
    void testWriteTemplate() throws IOException {
        var tmpDir = Files.createTempDirectory("bld-generated-version-write-").toFile();
        tmpDir.deleteOnExit();

        var gv = new GeneratedVersion();
        gv.setProject(PROJECT);
        gv.setDirectory(tmpDir);

        var t = gv.buildTemplate();
        gv.writeTemplate(t);

        deleteOnExit(tmpDir);

        assertThat(gv.getClassFile()).exists();

        var versionClass = FileUtils.readString(gv.getClassFile());
        assertThat(versionClass).contains("package com.example;").contains("class GeneratedVersion")
                .contains("MAJOR = 2").contains("MINOR = 1").contains("REVISION = 3")
                .contains("private GeneratedVersion");
    }
}