/*
 * Copyright 2013 - 2014 Felix Müller
 *
 * This file is part of CodeQ Invest.
 *
 * CodeQ Invest is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * CodeQ Invest is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with CodeQ Invest.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.codeqinvest.web.investment;

import lombok.extern.slf4j.Slf4j;
import org.codeqinvest.investment.InvestmentAmountParser;
import org.codeqinvest.investment.InvestmentParsingException;
import org.codeqinvest.investment.QualityInvestmentPlan;
import org.codeqinvest.investment.QualityInvestmentPlanService;
import org.codeqinvest.quality.Project;
import org.codeqinvest.quality.analysis.LastQualityAnalysisService;
import org.codeqinvest.quality.analysis.QualityAnalysis;
import org.codeqinvest.quality.repository.ProjectRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author fmueller
 */
@Slf4j
@Controller
class QualityInvestmentPlanController {

  private final ProjectRepository projectRepository;
  private final LastQualityAnalysisService lastQualityAnalysisService;
  private final QualityInvestmentPlanService investmentPlanService;
  private final InvestmentAmountParser investmentAmountParser;
  private final InvestmentPlanRequestValidator investmentPlanRequestValidator;
  private final RequirementCodeConverter requirementCodeConverter;

  @Autowired
  QualityInvestmentPlanController(ProjectRepository projectRepository,
                                  LastQualityAnalysisService lastQualityAnalysisService,
                                  QualityInvestmentPlanService investmentPlanService,
                                  InvestmentAmountParser investmentAmountParser,
                                  InvestmentPlanRequestValidator investmentPlanRequestValidator,
                                  RequirementCodeConverter requirementCodeConverter) {
    this.projectRepository = projectRepository;
    this.lastQualityAnalysisService = lastQualityAnalysisService;
    this.investmentPlanService = investmentPlanService;
    this.investmentAmountParser = investmentAmountParser;
    this.investmentPlanRequestValidator = investmentPlanRequestValidator;
    this.requirementCodeConverter = requirementCodeConverter;
  }

  @RequestMapping(value = "/projects/{projectId}/investment", method = RequestMethod.PUT)
  @ResponseBody
  QualityInvestmentPlan generateInvestmentPlan(@PathVariable long projectId,
                                               @RequestBody InvestmentPlanRequest investmentPlanRequest,
                                               BindingResult errors,
                                               HttpServletRequest request,
                                               HttpServletResponse response) throws InvestmentParsingException {
    investmentPlanRequestValidator.validate(investmentPlanRequest, errors);
    if (errors.hasErrors()) {
      response.setStatus(400);
      return null;
    }

    Project project = projectRepository.findOne(projectId);
    if (project == null) {
      response.setStatus(400);
      return null;
    }

    QualityAnalysis lastAnalysis = lastQualityAnalysisService.retrieveLastSuccessfulAnalysis(project);
    if (lastAnalysis == null) {
      response.setStatus(400);
      return null;
    }

    int investmentInMinutes = investmentAmountParser.parseMinutes(investmentPlanRequest.getInvestment());
    QualityInvestmentPlan investmentPlan = investmentPlanService.computeInvestmentPlan(lastAnalysis, investmentPlanRequest.getBasePackage(), investmentInMinutes);
    requirementCodeConverter.convertRequirementCodeToLocalizedMessage(request, investmentPlan);
    return investmentPlan;
  }
}