"use strict";

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: admin
 * Copyright IBM Corp. 2015, 2017
 * US Government Users Restricted Rights -
 * Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */
define(['underscore', 'bi/admin/common/services/ApiBase'], function (_, ApiBase) {
  'use strict'; //NOSONAR: meant to be strict

  var _singletonInstance = null;
  var ApiService = ApiBase.extend({
    filterTypes: [],

    /**
     * constructor
     * @options {object}
     * @example: {baseUrl: "http://localhost"}
     */
    init: function init(options) {
      ApiService.inherited('init', this, arguments);
      this.dataSources = this._getDsApiSet();
      this.dataConnections = this._getDcApiSet();
      this.signOns = this._getSignonApiSet();
      this.tables = this._getTableApiSet();
      this.schemas = this._getSchemaApiSet();
      this.tasks = this._getTaskApiSet();
      this.schemaSources = this._getSchemaSourceApiSet();
      this.history = this._getHistoryApiSet();
    },
    _getDsApiSet: function _getDsApiSet() {
      var self = this;
      var objType = 'datasources';

      var patchPath = function patchPath(path) {
        if (path.indexOf('?') > -1) {
          path = path + '&intType=light';
        } else {
          path = path + '?intType=light';
        }

        return path;
      };

      return {
        read: function read(id) {
          return self._ajax(patchPath(objType + "/" + id), self._getRestOptions());
        },
        update: function update(id, data) {
          return self._ajax(patchPath(objType + "/" + id), self._getRestOptions('PUT', data));
        },
        create: function create(data) {
          return self._ajax(patchPath(objType + "/"), self._getRestOptions('POST', data));
        },
        listDefinitions: function listDefinitions(cat) {
          return self._ajax(patchPath('definitions?cat=' + cat), self._getRestOptions());
        }
      };
    },
    _createResource: function _createResource(resTemp) {
      var self = this;

      var getResPath = function getResPath(resTemp, params) {
        var resPath = resTemp;
        params.push('');
        params.push('');
        params.push('');

        _.each(params, function (p, index) {
          var t = '[id' + index + ']';
          resPath = resPath.replace(t, p);
        });

        return resPath;
      };

      return {
        template: resTemp,
        request: function request(params, options, xCaAffinity) {
          var resPath = getResPath(this.template, params);

          if (xCaAffinity) {
            options.headers = {
              Accept: 'application/json',
              "x-ca-affinity": xCaAffinity
            };
          }

          return self._ajax(resPath, options);
        }
      };
    },
    _getDcApiSet: function _getDcApiSet() {
      var self = this;

      var res = this._createResource("datasources/[id0]/connections/[id1]");

      return {
        list: function list(dsId) {
          return res.request([dsId], self._getRestOptions());
        },
        read: function read(dsId, dcId) {
          return res.request([dsId, dcId], self._getRestOptions());
        },
        update: function update(dsId, dcId, data) {
          return res.request([dsId, dcId], self._getRestOptions('PUT', data));
        },
        create: function create(dsId, data) {
          return res.request([dsId], self._getRestOptions('POST', data));
        },
        remove: function remove(dsId, dcId) {
          return res.request([dsId, dcId], self._getRestOptions('DELETE'));
        },
        testConnection: function testConnection(data) {
          return self._ajax('datasourceconnection/test', self._getRestOptions('POST', data));
        },
        testConnectionWithCredential: function testConnectionWithCredential(data) {
          return self._ajax('datasourceconnection/test_with_credential', self._getRestOptions('POST', data));
        }
      };
    },
    _getSchemaApiSet: function _getSchemaApiSet() {
      var self = this;

      var res = this._createResource("metadata/schemas/[id0]");

      return {
        'read': function read(schemaId) {
          return res.request([schemaId], self._getRestOptions());
        },
        'update': function update(schemaId, data) {
          return res.request([schemaId], self._getRestOptions('PUT', data));
        },
        'clear': function clear(schemaId) {
          return res.request([schemaId], self._getRestOptions('DELETE'));
        }
      };
    },
    _getSchemaSourceApiSet: function _getSchemaSourceApiSet() {
      var self = this;

      var res = this._createResource("metadata/sources/[id0]/schemas");

      return {
        'create': function create(dsId, data) {
          return res.request([dsId], $.extend(self._getRestOptions('POST', data), {
            'dataType': 'text'
          }));
        }
      };
    },
    _getTableApiSet: function _getTableApiSet(schemaId) {
      var self = this;

      var res = this._createResource("metadata/schemas/[id0]/tables");

      return {
        'list': function list(schemaId) {
          return res.request([schemaId], self._getRestOptions());
        }
      };
    },
    _getTaskApiSet: function _getTaskApiSet() {
      var self = this;

      var res = this._createResource('metadata/tasks/[id0]');

      return {
        'cancel': function cancel(taskId, xCaAffinity) {
          return res.request([taskId], self._getRestOptions('DELETE'), xCaAffinity);
        }
      };
    },

    /*
     * This method fetches the history of the schema with schemaID.
     * @param {String} The schemaID of the selected schema
     * @return {Object} An object containing the requested api set
     */
    _getHistoryApiSet: function _getHistoryApiSet(schemaId) {
      var self = this,
          res = this._createResource("metadata/schemas/[id0]/history");

      return {
        list: function list(schemaId) {
          return res.request([schemaId], self._getRestOptions());
        }
      };
    },
    _getSignonApiSet: function _getSignonApiSet() {
      var self = this;

      var res = this._createResource("datasources/[id0]/connections/[id1]/signons/[id2]");

      return {
        list: function list(dsId, dcId) {
          return res.request([dsId, dcId], self._getRestOptions());
        },
        read: function read(dsId, dcId, signOnId) {
          return res.request([dsId, dcId, signOnId], self._getRestOptions());
        },
        update: function update(dsId, dcId, signOnId, data) {
          return res.request([dsId, dcId, signOnId], self._getRestOptions('PUT', data));
        },
        create: function create(dsId, dcId, data) {
          return res.request([dsId, dcId], self._getRestOptions('POST', data));
        },
        remove: function remove(dsId, dcId, signOnId) {
          return res.request([dsId, dcId, signOnId], self._getRestOptions('DELETE'));
        }
      };
    }
  });
  var _static = {
    getInstance: function getInstance() {
      if (!_singletonInstance) {
        _singletonInstance = new ApiService();
      }

      return _singletonInstance;
    }
  };
  return _static.getInstance();
});