sortFields()

in packages/aws-amplify-react/src/Auth/SignUp.tsx [113:174]

• 53 lines of code
• 20 McCabe index (conditional complexity)

	sortFields() {
		if (
			this.props.signUpConfig &&
			this.props.signUpConfig.hiddenDefaults &&
			this.props.signUpConfig.hiddenDefaults.length > 0
		) {
			this.defaultSignUpFields = this.defaultSignUpFields.filter(d => {
				return !this.props.signUpConfig.hiddenDefaults.includes(d.key);
			});
		}

		if (this.checkCustomSignUpFields()) {
			if (
				!this.props.signUpConfig ||
				!this.props.signUpConfig.hideAllDefaults
			) {
				// see if fields passed to component should override defaults
				this.defaultSignUpFields.forEach(f => {
					const matchKey = this.signUpFields.findIndex(d => {
						return d.key === f.key;
					});
					if (matchKey === -1) {
						this.signUpFields.push(f);
					}
				});
			}

			/* 
            sort fields based on following rules:
            1. Fields with displayOrder are sorted before those without displayOrder
            2. Fields with conflicting displayOrder are sorted alphabetically by key
            3. Fields without displayOrder are sorted alphabetically by key
          */
			this.signUpFields.sort((a, b) => {
				if (a.displayOrder && b.displayOrder) {
					if (a.displayOrder < b.displayOrder) {
						return -1;
					} else if (a.displayOrder > b.displayOrder) {
						return 1;
					} else {
						if (a.key < b.key) {
							return -1;
						} else {
							return 1;
						}
					}
				} else if (!a.displayOrder && b.displayOrder) {
					return 1;
				} else if (a.displayOrder && !b.displayOrder) {
					return -1;
				} else if (!a.displayOrder && !b.displayOrder) {
					if (a.key < b.key) {
						return -1;
					} else {
						return 1;
					}
				}
			});
		} else {
			this.signUpFields = this.defaultSignUpFields;
		}
	}