/*
 * Copyright 2017 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
 *
 *      http://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 org.gradle.initialization;

import com.google.common.base.Splitter;
import org.gradle.api.Transformer;
import org.gradle.api.internal.StartParameterInternal;
import org.gradle.api.internal.file.BasicFileResolver;
import org.gradle.cli.CommandLineOption;
import org.gradle.cli.CommandLineParser;
import org.gradle.internal.buildoption.BooleanBuildOption;
import org.gradle.internal.buildoption.BooleanCommandLineOptionConfiguration;
import org.gradle.internal.buildoption.BuildOption;
import org.gradle.internal.buildoption.CommandLineOptionConfiguration;
import org.gradle.internal.buildoption.EnabledOnlyBooleanBuildOption;
import org.gradle.internal.buildoption.ListBuildOption;
import org.gradle.internal.buildoption.Origin;
import org.gradle.internal.buildoption.StringBuildOption;

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

public class StartParameterBuildOptions {

    private static List<BuildOption<StartParameterInternal>> options;

    static {
        List<BuildOption<StartParameterInternal>> options = new ArrayList<BuildOption<StartParameterInternal>>();
        options.add(new ProjectCacheDirOption());
        options.add(new RerunTasksOption());
        options.add(new ProfileOption());
        options.add(new ContinueOption());
        options.add(new OfflineOption());
        options.add(new RefreshDependenciesOption());
        options.add(new DryRunOption());
        options.add(new ContinuousOption());
        options.add(new NoProjectDependenciesRebuildOption());
        options.add(new BuildFileOption());
        options.add(new SettingsFileOption());
        options.add(new InitScriptOption());
        options.add(new ExcludeTaskOption());
        options.add(new IncludeBuildOption());
        options.add(new ConfigureOnDemandOption());
        options.add(new BuildCacheOption());
        options.add(new BuildCacheDebugLoggingOption());
        options.add(new BuildScanOption());
        options.add(new DependencyLockingWriteOption());
        options.add(new DependencyVerificationWriteOption());
        options.add(new DependencyLockingUpdateOption());
        StartParameterBuildOptions.options = Collections.unmodifiableList(options);
    }

    public static List<BuildOption<StartParameterInternal>> get() {
        return options;
    }

    private StartParameterBuildOptions() {
    }

    public static class ProjectCacheDirOption extends StringBuildOption<StartParameterInternal> {
        public ProjectCacheDirOption() {
            super(null, CommandLineOptionConfiguration.create("project-cache-dir", "Specify the project-specific cache directory. Defaults to .gradle in the root project directory."));
        }

        @Override
        public void applyTo(String value, StartParameterInternal settings, Origin origin) {
            Transformer<File, String> resolver = new BasicFileResolver(settings.getCurrentDir());
            settings.setProjectCacheDir(resolver.transform(value));
        }
    }

    public static class RerunTasksOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public RerunTasksOption() {
            super(null, CommandLineOptionConfiguration.create("rerun-tasks", "Ignore previously cached task results."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setRerunTasks(true);
        }
    }

    public static class ProfileOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public ProfileOption() {
            super(null, CommandLineOptionConfiguration.create("profile", "Profile build execution time and generates a report in the <build_dir>/reports/profile directory."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setProfile(true);
        }
    }

    public static class ContinueOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public static final String LONG_OPTION = "continue";

        public ContinueOption() {
            super(null, CommandLineOptionConfiguration.create(LONG_OPTION, "Continue task execution after a task failure."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setContinueOnFailure(true);
        }
    }

    public static class OfflineOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public OfflineOption() {
            super(null, CommandLineOptionConfiguration.create("offline", "Execute the build without accessing network resources."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setOffline(true);
        }
    }

    public static class RefreshDependenciesOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public RefreshDependenciesOption() {
            super(null, CommandLineOptionConfiguration.create("refresh-dependencies", "Refresh the state of dependencies."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setRefreshDependencies(true);
        }
    }

    public static class DryRunOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public DryRunOption() {
            super(null, CommandLineOptionConfiguration.create("dry-run", "m", "Run the builds with all task actions disabled."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setDryRun(true);
        }
    }

    public static class ContinuousOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public ContinuousOption() {
            super(null, CommandLineOptionConfiguration.create("continuous", "t", "Enables continuous build. Gradle does not exit and will re-execute tasks when task file inputs change."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setContinuous(true);
        }
    }

    public static class NoProjectDependenciesRebuildOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        private static final String LONG_OPTION = "no-rebuild";
        private static final String SHORT_OPTION = "a";

        public NoProjectDependenciesRebuildOption() {
            super(null, CommandLineOptionConfiguration.create(LONG_OPTION, SHORT_OPTION, "Do not rebuild project dependencies."));
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setBuildProjectDependencies(false);
        }
    }

    public static class BuildFileOption extends StringBuildOption<StartParameterInternal> {
        public BuildFileOption() {
            super(null, CommandLineOptionConfiguration.create("build-file", "b", "Specify the build file."));
        }

        @Override
        public void applyTo(String value, StartParameterInternal settings, Origin origin) {
            Transformer<File, String> resolver = new BasicFileResolver(settings.getCurrentDir());
            settings.setBuildFile(resolver.transform(value));
        }
    }

    public static class SettingsFileOption extends StringBuildOption<StartParameterInternal> {
        public SettingsFileOption() {
            super(null, CommandLineOptionConfiguration.create("settings-file", "c", "Specify the settings file."));
        }

        @Override
        public void applyTo(String value, StartParameterInternal settings, Origin origin) {
            Transformer<File, String> resolver = new BasicFileResolver(settings.getCurrentDir());
            settings.setSettingsFile(resolver.transform(value));
        }
    }

    public static class InitScriptOption extends ListBuildOption<StartParameterInternal> {
        public InitScriptOption() {
            super(null, CommandLineOptionConfiguration.create("init-script", "I", "Specify an initialization script."));
        }

        @Override
        public void applyTo(List<String> values, StartParameterInternal settings, Origin origin) {
            Transformer<File, String> resolver = new BasicFileResolver(settings.getCurrentDir());

            for (String script : values) {
                settings.addInitScript(resolver.transform(script));
            }
        }
    }

    public static class ExcludeTaskOption extends ListBuildOption<StartParameterInternal> {
        public ExcludeTaskOption() {
            super(null, CommandLineOptionConfiguration.create("exclude-task", "x", "Specify a task to be excluded from execution."));
        }

        @Override
        public void applyTo(List<String> values, StartParameterInternal settings, Origin origin) {
            settings.setExcludedTaskNames(values);
        }
    }

    public static class IncludeBuildOption extends ListBuildOption<StartParameterInternal> {
        public IncludeBuildOption() {
            super(null, CommandLineOptionConfiguration.create("include-build", "Include the specified build in the composite."));
        }

        @Override
        public void applyTo(List<String> values, StartParameterInternal settings, Origin origin) {
            Transformer<File, String> resolver = new BasicFileResolver(settings.getCurrentDir());

            for (String includedBuild : values) {
                settings.includeBuild(resolver.transform(includedBuild));
            }
        }
    }

    public static class ConfigureOnDemandOption extends BooleanBuildOption<StartParameterInternal> {
        public static final String GRADLE_PROPERTY = "org.gradle.configureondemand";

        public ConfigureOnDemandOption() {
            super(GRADLE_PROPERTY, BooleanCommandLineOptionConfiguration.create("configure-on-demand", "Configure necessary projects only. Gradle will attempt to reduce configuration time for large multi-project builds.", "Disables the use of configuration on demand.").incubating());
        }

        @Override
        public void applyTo(boolean value, StartParameterInternal settings, Origin origin) {
            settings.setConfigureOnDemand(value);
        }
    }

    public static class BuildCacheOption extends BooleanBuildOption<StartParameterInternal> {
        public static final String GRADLE_PROPERTY = "org.gradle.caching";

        public BuildCacheOption() {
            super(GRADLE_PROPERTY, BooleanCommandLineOptionConfiguration.create("build-cache", "Enables the Gradle build cache. Gradle will try to reuse outputs from previous builds.", "Disables the Gradle build cache."));
        }

        @Override
        public void applyTo(boolean value, StartParameterInternal settings, Origin origin) {
            settings.setBuildCacheEnabled(value);
        }
    }

    public static class BuildCacheDebugLoggingOption extends BooleanBuildOption<StartParameterInternal> {
        public static final String GRADLE_PROPERTY = "org.gradle.caching.debug";

        public BuildCacheDebugLoggingOption() {
            super(GRADLE_PROPERTY);
        }

        @Override
        public void applyTo(boolean value, StartParameterInternal settings, Origin origin) {
            settings.setBuildCacheDebugLogging(value);
        }
    }

    public static class BuildScanOption extends BooleanBuildOption<StartParameterInternal> {
        public static final String LONG_OPTION = "scan";

        public BuildScanOption() {
            super(null, BooleanCommandLineOptionConfiguration.create(LONG_OPTION, "Creates a build scan. Gradle will emit a warning if the build scan plugin has not been applied. (https://gradle.com/build-scans)", "Disables the creation of a build scan. For more information about build scans, please visit https://gradle.com/build-scans."));
        }

        @Override
        public void applyTo(boolean value, StartParameterInternal settings, Origin origin) {
            if (value) {
                settings.setBuildScan(true);
            } else {
                settings.setNoBuildScan(true);
            }
        }
    }

    public static class DependencyLockingWriteOption extends EnabledOnlyBooleanBuildOption<StartParameterInternal> {
        public static final String LONG_OPTION = "write-locks";

        public DependencyLockingWriteOption() {
            super(null, CommandLineOptionConfiguration.create(LONG_OPTION, "Persists dependency resolution for locked configurations, ignoring existing locking information if it exists").incubating());
        }

        @Override
        public void applyTo(StartParameterInternal settings, Origin origin) {
            settings.setWriteDependencyLocks(true);
        }
    }

    public static class DependencyVerificationWriteOption extends StringBuildOption<StartParameterInternal> {
        public static final String LONG_OPTION = "write-verification-metadata";

        DependencyVerificationWriteOption() {
            super(null, CommandLineOptionConfiguration.create(LONG_OPTION,
                "Generates checksums for dependencies used in the project (comma-separated list)").incubating());
        }

        @Override
        protected CommandLineOption configureCommandLineOption(CommandLineParser parser, String[] options, String description, boolean deprecated, boolean incubating) {
            return super.configureCommandLineOption(parser, options, description, deprecated, incubating);
        }

        @Override
        public void applyTo(String value, StartParameterInternal settings, Origin origin) {
            List<String> checksums = Splitter.on(",")
                .omitEmptyStrings()
                .trimResults()
                .splitToList(value)
                .stream()
                .map(String::toLowerCase)
                .collect(Collectors.toList());
            settings.setWriteDependencyVerifications(checksums);
        }
    }

    public static class DependencyLockingUpdateOption extends ListBuildOption<StartParameterInternal> {

        public DependencyLockingUpdateOption() {
            super(null, CommandLineOptionConfiguration.create("update-locks", "Perform a partial update of the dependency lock, letting passed in module notations change version.").incubating());
        }

        @Override
        public void applyTo(List<String> modulesToUpdate, StartParameterInternal settings, Origin origin) {
            settings.setLockedDependenciesToUpdate(modulesToUpdate);
        }
    }
}
