package io.swagger.codegen.languages;

import io.swagger.codegen.*;
import io.swagger.models.Operation;

import java.util.*;

import org.apache.commons.lang3.BooleanUtils;
import org.apache.commons.lang3.StringUtils;

public class JavaMSF4JServerCodegen extends AbstractJavaJAXRSServerCodegen {

    protected static final String LIBRARY_JERSEY1 = "jersey1";
    protected static final String LIBRARY_JERSEY2 = "jersey2";


    public static final String DEFAULT_LIBRARY = LIBRARY_JERSEY2;

    public JavaMSF4JServerCodegen() {
        super();
        outputFolder = "generated-code/JavaJaxRS-MSF4J";
        apiTemplateFiles.put("apiService.mustache", ".java");
        apiTemplateFiles.put("apiServiceImpl.mustache", ".java");
        apiTemplateFiles.put("apiServiceFactory.mustache", ".java");
        apiTestTemplateFiles.clear(); 
        modelDocTemplateFiles.remove("model_doc.mustache");
        apiDocTemplateFiles.remove("api_doc.mustache");
        embeddedTemplateDir = templateDir = "MSF4J";
        CliOption library = new CliOption(CodegenConstants.LIBRARY, "library template (sub-template) to use");
        supportedLibraries.put(LIBRARY_JERSEY1, "Jersey core 1.x");
        supportedLibraries.put(LIBRARY_JERSEY2, "Jersey core 2.x");
        library.setEnum(supportedLibraries);
        library.setDefault(DEFAULT_LIBRARY);
        cliOptions.add(library);

    }

    @Override
    public String getName()
    {
        return "msf4j";
    }

    @Override
    public String getHelp()
    {
        return "Generates a Java Micro Service based on WSO2 Microservices Framework for Java (MSF4J)";
    }

    @Override
    public void postProcessModelProperty(CodegenModel model, CodegenProperty property) {
        super.postProcessModelProperty(model, property);
        if("null".equals(property.example)) {
            property.example = null;
        }

        //Add imports for Jackson
        if(!BooleanUtils.toBoolean(model.isEnum)) {
            model.imports.add("JsonProperty");

            if(BooleanUtils.toBoolean(model.hasEnums)) {
                model.imports.add("JsonValue");
            }
        }
    }

    @Override
    public void processOpts() {
        super.processOpts();

        // use default library if unset
        if (StringUtils.isEmpty(library)) {
            setLibrary(DEFAULT_LIBRARY);
        }

        if ( additionalProperties.containsKey(CodegenConstants.IMPL_FOLDER)) {
            implFolder = (String) additionalProperties.get(CodegenConstants.IMPL_FOLDER);
        }

        if ("joda".equals(dateLibrary)) {
            supportingFiles.add(new SupportingFile("JodaDateTimeProvider.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "JodaDateTimeProvider.java"));
            supportingFiles.add(new SupportingFile("JodaLocalDateProvider.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "JodaLocalDateProvider.java"));
        } else if ( dateLibrary.startsWith("java8") ) {
            supportingFiles.add(new SupportingFile("OffsetDateTimeProvider.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "OffsetDateTimeProvider.java"));
            supportingFiles.add(new SupportingFile("LocalDateProvider.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "LocalDateProvider.java"));
        }

        writeOptional(outputFolder, new SupportingFile("pom.mustache", "", "pom.xml"));
        writeOptional(outputFolder, new SupportingFile("README.mustache", "", "README.md"));
        supportingFiles.add(new SupportingFile("ApiException.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "ApiException.java"));
        supportingFiles.add(new SupportingFile("ApiOriginFilter.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "ApiOriginFilter.java"));
        supportingFiles.add(new SupportingFile("ApiResponseMessage.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "ApiResponseMessage.java"));
        supportingFiles.add(new SupportingFile("NotFoundException.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "NotFoundException.java"));
        supportingFiles.add(new SupportingFile("jacksonJsonProvider.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "JacksonJsonProvider.java"));
        supportingFiles.add(new SupportingFile("RFC3339DateFormat.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "RFC3339DateFormat.java"));
        //writeOptional(outputFolder, new SupportingFile("bootstrap.mustache", (implFolder + '/' + apiPackage).replace(".", "/"), "Bootstrap.java"));
        //writeOptional(outputFolder, new SupportingFile("web.mustache", ("src/main/webapp/WEB-INF"), "web.xml"));
        supportingFiles.add(new SupportingFile("StringUtil.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "StringUtil.java"));
        supportingFiles.add(new SupportingFile("Application.mustache", (sourceFolder + '/' + apiPackage).replace(".", "/"), "Application.java"));
    }

    @Override
    public Map<String, Object> postProcessModelsEnum(Map<String, Object> objs) {
        objs = super.postProcessModelsEnum(objs);

        //Add imports for Jackson
        List<Map<String, String>> imports = (List<Map<String, String>>)objs.get("imports");
        List<Object> models = (List<Object>) objs.get("models");
        for (Object _mo : models) {
            Map<String, Object> mo = (Map<String, Object>) _mo;
            CodegenModel cm = (CodegenModel) mo.get("model");
            // for enum model
            if (Boolean.TRUE.equals(cm.isEnum) && cm.allowableValues != null) {
                cm.imports.add(importMapping.get("JsonValue"));
                Map<String, String> item = new HashMap<String, String>();
                item.put("import", importMapping.get("JsonValue"));
                imports.add(item);
            }
        }

        return objs;
    }

    @Override
    public void addOperationToGroup(String tag, String resourcePath, Operation operation, CodegenOperation co, Map<String, List<CodegenOperation>> operations) {
        String basePath = resourcePath;
        if (basePath.startsWith("/")) {
            basePath = basePath.substring(1);
        }
        int pos = basePath.indexOf("/");
        if (pos > 0) {
            basePath = basePath.substring(0, pos);
        }

        if (basePath == "") {
            basePath = "default";
        } else {
            if (co.path.startsWith("/" + basePath)) {
                co.path = co.path.substring(("/" + basePath).length());
            }
            co.subresourceOperation = !co.path.isEmpty();
        }
        List<CodegenOperation> opList = operations.get(basePath);
        if (opList == null) {
            opList = new ArrayList<CodegenOperation>();
            operations.put(basePath, opList);
        }
        opList.add(co);
        co.baseName = basePath;
    }

}