package com.airlock.iam.authentication.application.configuration;

import com.airlock.iam.authentication.application.configuration.processor.DefaultAuthorizationProcessorsConfig;
import com.airlock.iam.flow.api.application.configuration.flowprocessor.FlowProcessorConfig;
import com.airlock.iam.flow.api.application.configuration.flowprocessor.FlowProcessorsConfig;
import com.airlock.iam.flow.api.application.configuration.sequence.FlowStepSequence;
import com.airlock.iam.flow.application.configuration.FlowConfig;
import com.airlock.iam.flow.application.configuration.validation.FlowStepIdConfigValidators;
import com.airlock.iam.flow.types.api.application.configuration.step.StepConfigForAuthorizationFlows;
import com.airlock.iam.plugin.api.annotation.config.ConfigurationValidator;
import com.airlock.iam.plugin.api.annotation.config.Plugin;
import com.airlock.iam.plugin.api.annotation.property.PluginListProperty;
import com.airlock.iam.plugin.api.annotation.property.PluginProperty;
import com.airlock.iam.plugin.api.config.ConfigurationContext;
import com.airlock.iam.plugin.api.config.ConfigurationEnvironment;
import com.airlock.iam.plugin.api.config.Environment;
import com.airlock.iam.plugin.api.config.PluginConfiguration;
import com.airlock.iam.plugin.api.exception.ConfigurationException;
import com.airlock.iam.plugin.framework.application.service.builder.plugin.PluginPropertyBuilderInitializer;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

@Plugin(description = "Configuration for an authorization flow.", displayName = "Authorization Flow")
public class AuthorizationFlowConfig implements FlowConfig {
   public static final String AUTHORIZATION_FLOW_DISPLAY_NAME = "Authorization Flow";
   @PluginListProperty(description = "Steps of the flow.", optional = false, minElements = 1)
   private List<StepConfigForAuthorizationFlows> steps;
   @PluginProperty(
      description = "Processors get notified about the various stages of the flow and offer hooks to plug in custom logic. These processors ensure user validity during the authorization process.",
      optional = true,
      defaultValue = DefaultAuthorizationProcessorsConfig.class
   )
   private FlowProcessorsConfig processors;

   @Override
   public FlowStepSequence getSteps() {
      return ((FlowStepSequence.FlowStepSequenceBuilder)PluginPropertyBuilderInitializer.pluginBuilder(FlowStepSequence.FlowStepSequenceBuilder.class))
         .steps(this.steps)
         .build();
   }

   @Override
   public List<FlowProcessorConfig> getProcessors() {
      return this.processors.getProcessors();
   }

   @ConfigurationValidator
   static void validateFlowConstraints(
      PluginConfiguration config, ConfigurationEnvironment env, ConfigurationContext context, Environment validationEnvironment
   ) throws ConfigurationException {
      new FlowStepIdConfigValidators(config, env, context, false, config).validateFlowConstraints();
   }

   @SuppressFBWarnings(justification = "generated code")
   public static AuthorizationFlowConfig.AuthorizationFlowConfigBuilder builder() {
      return new AuthorizationFlowConfig.AuthorizationFlowConfigBuilder();
   }

   @SuppressFBWarnings(justification = "generated code")
   public AuthorizationFlowConfig() {
   }

   @SuppressFBWarnings(justification = "generated code")
   public AuthorizationFlowConfig(List<StepConfigForAuthorizationFlows> steps, FlowProcessorsConfig processors) {
      this.steps = steps;
      this.processors = processors;
   }

   @SuppressFBWarnings(justification = "generated code")
   public static class AuthorizationFlowConfigBuilder {
      @SuppressFBWarnings(justification = "generated code")
      private ArrayList<StepConfigForAuthorizationFlows> steps;
      @SuppressFBWarnings(justification = "generated code")
      private FlowProcessorsConfig processors;

      @SuppressFBWarnings(justification = "generated code")
      AuthorizationFlowConfigBuilder() {
      }

      @SuppressFBWarnings(justification = "generated code")
      public AuthorizationFlowConfig.AuthorizationFlowConfigBuilder step(StepConfigForAuthorizationFlows step) {
         if (this.steps == null) {
            this.steps = new ArrayList<>();
         }

         this.steps.add(step);
         return this;
      }

      @SuppressFBWarnings(justification = "generated code")
      public AuthorizationFlowConfig.AuthorizationFlowConfigBuilder steps(Collection<? extends StepConfigForAuthorizationFlows> steps) {
         if (steps == null) {
            throw new NullPointerException("steps cannot be null");
         }

         if (this.steps == null) {
            this.steps = new ArrayList<>();
         }

         this.steps.addAll(steps);
         return this;
      }

      @SuppressFBWarnings(justification = "generated code")
      public AuthorizationFlowConfig.AuthorizationFlowConfigBuilder clearSteps() {
         if (this.steps != null) {
            this.steps.clear();
         }

         return this;
      }

      @SuppressFBWarnings(justification = "generated code")
      public AuthorizationFlowConfig.AuthorizationFlowConfigBuilder processors(FlowProcessorsConfig processors) {
         this.processors = processors;
         return this;
      }

      @SuppressFBWarnings(justification = "generated code")
      public AuthorizationFlowConfig build() {
         return new AuthorizationFlowConfig(switch (this.steps == null ? 0 : this.steps.size()) {
            case 0 -> Collections.emptyList();
            case 1 -> Collections.singletonList(this.steps.get(0));
            default -> Collections.unmodifiableList(new ArrayList<>(this.steps));
         }, this.processors);
      }

      @SuppressFBWarnings(justification = "generated code")
      @Override
      public String toString() {
         return "AuthorizationFlowConfig.AuthorizationFlowConfigBuilder(steps=" + this.steps + ", processors=" + this.processors + ")";
      }
   }
}