// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

package com.azure.iot.modelsrepository.implementation;

import com.azure.core.annotation.ServiceClientBuilder;
import com.azure.core.http.HttpClient;
import com.azure.core.http.HttpPipeline;
import com.azure.core.http.HttpPipelineBuilder;
import com.azure.core.http.policy.CookiePolicy;
import com.azure.core.http.policy.HttpLogOptions;
import com.azure.core.http.policy.HttpLoggingPolicy;
import com.azure.core.http.policy.HttpPipelinePolicy;
import com.azure.core.http.policy.HttpPolicyProviders;
import com.azure.core.http.policy.RetryPolicy;
import com.azure.core.http.policy.UserAgentPolicy;
import com.azure.core.util.Configuration;
import com.azure.core.util.serializer.JacksonAdapter;
import com.azure.core.util.serializer.SerializerAdapter;
import com.azure.iot.modelsrepository.ModelsRepositoryServiceVersion;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * A builder for creating a new instance of the ModelsRepositoryAPI type.
 */
@ServiceClientBuilder(serviceClients = {ModelsRepositoryAPIImpl.class})
public final class ModelsRepositoryAPIImplBuilder {
    private static final String SDK_NAME = "name";

    private static final String SDK_VERSION = "version";

    private final Map<String, String> properties = new HashMap<>();

    public ModelsRepositoryAPIImplBuilder() {
        this.pipelinePolicies = new ArrayList<>();
    }

    /*
     * server parameter
     */
    private String host;

    /**
     * Sets server parameter.
     *
     * @param host the host value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder host(String host) {
        this.host = host;
        return this;
    }

    /*
     * The HTTP pipeline to send requests through
     */
    private HttpPipeline pipeline;

    /**
     * Sets The HTTP pipeline to send requests through.
     *
     * @param pipeline the pipeline value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder pipeline(HttpPipeline pipeline) {
        this.pipeline = pipeline;
        return this;
    }

    /*
     * The serializer to serialize an object into a string
     */
    private SerializerAdapter serializerAdapter;

    /**
     * Sets The serializer to serialize an object into a string.
     *
     * @param serializerAdapter the serializerAdapter value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder serializerAdapter(SerializerAdapter serializerAdapter) {
        this.serializerAdapter = serializerAdapter;
        return this;
    }

    /*
     * The HTTP client used to send the request.
     */
    private HttpClient httpClient;

    /**
     * Sets The HTTP client used to send the request.
     *
     * @param httpClient the httpClient value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder httpClient(HttpClient httpClient) {
        this.httpClient = httpClient;
        return this;
    }

    /*
     * The configuration store that is used during construction of the service
     * client.
     */
    private Configuration configuration;

    /**
     * Sets The configuration store that is used during construction of the service client.
     *
     * @param configuration the configuration value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder configuration(Configuration configuration) {
        this.configuration = configuration;
        return this;
    }

    /*
     * The logging configuration for HTTP requests and responses.
     */
    private HttpLogOptions httpLogOptions;

    /**
     * Sets The logging configuration for HTTP requests and responses.
     *
     * @param httpLogOptions the httpLogOptions value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder httpLogOptions(HttpLogOptions httpLogOptions) {
        this.httpLogOptions = httpLogOptions;
        return this;
    }

    /*
     * Api Version
     */
    private String apiVersion;

    /**
     * Sets Api Version.
     *
     * @param apiVersion the apiVersion value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder apiVersion(String apiVersion) {
        this.apiVersion = apiVersion;
        return this;
    }

    /*
     * The retry policy that will attempt to retry failed requests, if
     * applicable.
     */
    private RetryPolicy retryPolicy;

    /**
     * Sets The retry policy that will attempt to retry failed requests, if applicable.
     *
     * @param retryPolicy the retryPolicy value.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder retryPolicy(RetryPolicy retryPolicy) {
        this.retryPolicy = retryPolicy;
        return this;
    }

    /*
     * The list of Http pipeline policies to add.
     */
    private final List<HttpPipelinePolicy> pipelinePolicies;

    /**
     * Adds a custom Http pipeline policy.
     *
     * @param customPolicy The custom Http pipeline policy to add.
     * @return the ModelsRepositoryAPIImplBuilder.
     */
    public ModelsRepositoryAPIImplBuilder addPolicy(HttpPipelinePolicy customPolicy) {
        pipelinePolicies.add(customPolicy);
        return this;
    }

    /**
     * Builds an instance of ModelsRepositoryAPIImpl with the provided parameters.
     *
     * @return an instance of ModelsRepositoryAPIImpl.
     */
    public ModelsRepositoryAPIImpl buildClient() {
        if (apiVersion == null) {
            this.apiVersion = ModelsRepositoryServiceVersion.getLatest().toString();
        }
        if (host == null) {
            this.host = ModelsRepositoryConstants.DEFAULT_MODELS_REPOSITORY_ENDPOINT;
        }
        if (pipeline == null) {
            this.pipeline = createHttpPipeline();
        }
        if (serializerAdapter == null) {
            this.serializerAdapter = JacksonAdapter.createDefaultSerializerAdapter();
        }

        return new ModelsRepositoryAPIImpl(pipeline, serializerAdapter, host, apiVersion);
    }

    private HttpPipeline createHttpPipeline() {
        Configuration buildConfiguration =
            (configuration == null) ? Configuration.getGlobalConfiguration() : configuration;
        if (httpLogOptions == null) {
            httpLogOptions = new HttpLogOptions();
        }
        List<HttpPipelinePolicy> policies = new ArrayList<>();
        String clientName = properties.getOrDefault(SDK_NAME, "UnknownName");
        String clientVersion = properties.getOrDefault(SDK_VERSION, "UnknownVersion");
        policies.add(
            new UserAgentPolicy(httpLogOptions.getApplicationId(), clientName, clientVersion, buildConfiguration));
        HttpPolicyProviders.addBeforeRetryPolicies(policies);
        policies.add(retryPolicy == null ? new RetryPolicy() : retryPolicy);
        policies.add(new CookiePolicy());
        policies.addAll(this.pipelinePolicies);
        HttpPolicyProviders.addAfterRetryPolicies(policies);
        policies.add(new HttpLoggingPolicy(httpLogOptions));
        return new HttpPipelineBuilder()
            .policies(policies.toArray(new HttpPipelinePolicy[0]))
            .httpClient(httpClient)
            .build();
    }
}
