@formql/core
Version:
FormQL - A framework for building dynamic forms
141 lines • 18.4 kB
JavaScript
import { __read, __spread } from "tslib";
import { HelperService } from '../services/helper.service';
var RuleLogic = /** @class */ (function () {
function RuleLogic() {
this.evalFunctions = ['GET', 'SUM'];
}
/*
Perform a condition evaluation
*/
RuleLogic.prototype.doEval = function (condition, conditionFunctions) {
var conditionFunctionsDeclares = Object.keys(conditionFunctions).map(function (x) { return "let " + x + " = conditionFunctions." + x + "; "; }).join('');
if (condition.trim() === '')
return;
if (this.evalFunctions.indexOf(condition.trim()) !== -1)
throw Error("Funcitons need a parameter (e.g. GET('contact.firstName') )");
var props = [];
var params = [];
params.push(condition);
params.push(conditionFunctions);
props.push('condition');
props.push('conditionFunctions');
var expression = "\n 'use strict'\n " + conditionFunctionsDeclares + "\n let window = undefined;\n let document = undefined;\n let alert = undefined;\n let a = undefined;\n return " + condition + ";\n ";
props.push(expression);
try {
var evalFunc = new (Function.bind.apply(Function, __spread([void 0], props)))();
var response = evalFunc.apply(void 0, __spread(params));
return response;
}
catch (err) {
debugger; // intentionally left to help troubleshooting issues
console.log(err);
throw err;
}
};
/*
Reset all dependancies for any given condition in a component
*/
RuleLogic.prototype.resetDependancies = function (formState, condition, component) {
'use strict';
var self = this;
var registerFunctions = {
GET: function (schema) {
formState.components = self.setDependents(formState.components, schema, component.componentId);
},
SUM: function () {
var schemas = [];
for (var _i = 0; _i < arguments.length; _i++) {
schemas[_i] = arguments[_i];
}
schemas.forEach(function (schema) { return formState.components = self.setDependents(formState.components, schema, component.componentId); });
}
};
return this.doEval(condition, registerFunctions);
};
/*
Evaluetes the value of any given condition
*/
RuleLogic.prototype.evaluate = function (data, condition) {
'use strict';
var self = this;
var evalFunctions = {
GET: function (schema) {
var result = self.getSchemaValue(data, schema);
if (result !== undefined && result !== null)
return result;
else
return '';
},
SUM: function () {
var schemas = [];
for (var _i = 0; _i < arguments.length; _i++) {
schemas[_i] = arguments[_i];
}
var total = 0;
schemas.forEach(function (schema) {
var value = self.getSchemaValue(data, schema);
if (value && !isNaN(value))
total += value;
});
return total;
}
};
return this.doEval(condition, evalFunctions);
};
RuleLogic.prototype.evaluateCondition = function (data, condition) {
var response = { value: false, error: null };
if (condition && condition.trim() !== '' && condition !== 'false') {
if (condition === 'true') {
response.value = true;
return response;
}
if (!data)
return response;
try {
response.value = this.evaluate(data, condition);
}
catch (err) {
response.error = err;
}
if (response.value !== true)
response.value = false;
}
return response;
};
RuleLogic.prototype.evaluateValue = function (data, expression) {
var response = { value: null, error: null };
if (!data)
return response;
try {
response.value = this.evaluate(data, expression);
}
catch (err) {
response.error = err;
return response;
}
if (Number.isNaN(response.value) || response.value === Infinity)
response.value = null;
else
response.value = HelperService.deepCopy(response.value);
return response;
};
RuleLogic.prototype.getSchemaValue = function (data, schema) {
var evalFunc = new Function('data', 'schema', "return data." + schema);
return evalFunc(data, schema);
};
RuleLogic.prototype.setDependents = function (components, schema, componentId) {
Object.keys(components).forEach(function (key) {
var component = components[key];
if (component.schema === schema) {
if (!component.dependents)
component.dependents = [componentId];
else if (component.dependents.indexOf(componentId) === -1)
component.dependents.push(componentId);
}
});
return components;
};
return RuleLogic;
}());
export { RuleLogic };
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{ FormComponent } from '../models/form-component.model';\r\nimport { FormState, FormComponents } from '../models/form-window.model';\r\nimport { EvalResponse } from '../models/type.model';\r\nimport { HelperService } from '../services/helper.service';\r\n\r\nexport class RuleLogic {\r\n\r\n  private evalFunctions = ['GET', 'SUM'];\r\n\r\n  constructor() { }\r\n\r\n  /*\r\n    Perform a condition evaluation\r\n  */\r\n  private doEval<U>(condition: string, conditionFunctions: object): U {\r\n\r\n    const conditionFunctionsDeclares = Object.keys(conditionFunctions).map(x => `let ${x} = conditionFunctions.${x}; `).join('');\r\n\r\n    if (condition.trim() === '')\r\n      return;\r\n\r\n    if (this.evalFunctions.indexOf(condition.trim()) !== -1)\r\n      throw Error(`Funcitons need a parameter (e.g. GET('contact.firstName') )`);\r\n\r\n    const props = [];\r\n    const params = [];\r\n\r\n\r\n    params.push(condition);\r\n    params.push(conditionFunctions);\r\n\r\n    props.push('condition');\r\n    props.push('conditionFunctions');\r\n\r\n    const expression = `\r\n            'use strict'\r\n            ${conditionFunctionsDeclares}\r\n            let window = undefined;\r\n            let document = undefined;\r\n            let alert = undefined;\r\n            let a = undefined;\r\n            return ${condition};\r\n        `;\r\n\r\n    props.push(expression);\r\n\r\n    try {\r\n      const evalFunc = new Function(...props);\r\n      const response = evalFunc(...params);\r\n      return response;\r\n    } catch (err) {\r\n      debugger; // intentionally left to help troubleshooting issues\r\n      console.log(err);\r\n      throw err;\r\n    }\r\n  }\r\n\r\n  /*\r\n    Reset all dependancies for any given condition in a component\r\n  */\r\n  public resetDependancies<T, U>(formState: FormState, condition: string, component: FormComponent<T>): U {\r\n    'use strict';\r\n    const self = this;\r\n    const registerFunctions = {\r\n      GET(schema: string) {\r\n        formState.components = self.setDependents(formState.components, schema, component.componentId);\r\n      },\r\n      SUM(...schemas: string[]) {\r\n        schemas.forEach(schema => formState.components = self.setDependents(formState.components, schema, component.componentId));\r\n      }\r\n    };\r\n    return this.doEval(condition, registerFunctions);\r\n  }\r\n\r\n  /*\r\n    Evaluetes the value of any given condition\r\n  */\r\n  public evaluate<T, U>(data: T, condition: string): U {\r\n    'use strict';\r\n    const self = this;\r\n    const evalFunctions = {\r\n      GET(schema: string) {\r\n        const result = self.getSchemaValue(data, schema);\r\n        if (result !== undefined && result !== null)\r\n          return result;\r\n        else\r\n          return '';\r\n      },\r\n      SUM(...schemas: string[]) {\r\n        let total = 0;\r\n        schemas.forEach(schema => {\r\n          const value = self.getSchemaValue(data, schema) as number;\r\n          if (value && !isNaN(value))\r\n            total += value;\r\n        });\r\n        return total;\r\n      }\r\n    };\r\n    return this.doEval(condition, evalFunctions);\r\n  }\r\n\r\n  public evaluateCondition<T>(data: T, condition: string): EvalResponse {\r\n    const response = { value: false, error: null } as EvalResponse;\r\n\r\n    if (condition && condition.trim() !== '' && condition !== 'false') {\r\n\r\n      if (condition === 'true') {\r\n        response.value = true;\r\n        return response;\r\n      }\r\n\r\n      if (!data)\r\n        return response;\r\n\r\n      try {\r\n        response.value = this.evaluate(data, condition);\r\n      } catch (err) {\r\n        response.error = err;\r\n      }\r\n\r\n      if (response.value !== true)\r\n        response.value = false;\r\n    }\r\n    return response;\r\n  }\r\n\r\n  public evaluateValue<T>(data: T, expression: string): EvalResponse {\r\n    const response = { value: null, error: null } as EvalResponse;\r\n\r\n    if (!data)\r\n      return response;\r\n\r\n    try {\r\n      response.value = this.evaluate(data, expression);\r\n    } catch (err) {\r\n      response.error = err;\r\n      return response;\r\n    }\r\n\r\n    if (Number.isNaN(response.value) || response.value === Infinity)\r\n      response.value = null;\r\n    else\r\n      response.value = HelperService.deepCopy(response.value);\r\n\r\n    return response;\r\n  }\r\n\r\n\r\n  private getSchemaValue<T, U>(data: T, schema: string): U {\r\n    const evalFunc = new Function('data', 'schema', `return data.${schema}`);\r\n    return evalFunc(data, schema) as U;\r\n  }\r\n\r\n  private setDependents(components: FormComponents, schema: string, componentId: string): FormComponents {\r\n    Object.keys(components).forEach((key) => {\r\n      const component = components[key];\r\n      if (component.schema === schema) {\r\n        if (!component.dependents)\r\n          component.dependents = [componentId];\r\n        else if (component.dependents.indexOf(componentId) === -1)\r\n          component.dependents.push(componentId);\r\n      }\r\n    });\r\n    return components;\r\n  }\r\n}\r\n"]}