swaf/dist/db/Validator.js

261 lines
31 KiB
JavaScript

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
export default class Validator {
constructor() {
this.steps = [];
this.validationAttributes = [];
}
/**
* @param thingName The name of the thing to validate.
* @param value The value to verify.
* @param onlyFormat {@code true} to only validate format properties, {@code false} otherwise.
* @param connection A connection to use in case of wrapped transactions.
*/
execute(thingName, value, onlyFormat, connection) {
return __awaiter(this, void 0, void 0, function* () {
const bag = new ValidationBag();
for (const step of this.steps) {
if (onlyFormat && !step.isFormat)
continue;
const result = step.verifyStep(value, thingName, connection);
if ((result === false || result instanceof Promise && (yield result) === false) && step.throw) {
const error = step.throw();
error.thingName = thingName;
error.value = value;
bag.addMessage(error);
}
else if (step.interrupt !== undefined && step.interrupt(value)) {
break;
}
}
if (bag.hasMessages()) {
throw bag;
}
});
}
defined() {
this.validationAttributes.push('required');
this.addStep({
verifyStep: val => val !== undefined,
throw: () => new UndefinedValueValidationError(),
isFormat: true,
});
return this;
}
acceptUndefined() {
this.addStep({
verifyStep: () => true,
throw: null,
interrupt: val => val === undefined || val === null,
isFormat: true,
});
return this;
}
equals(other) {
this.addStep({
verifyStep: val => val === other,
throw: () => new BadValueValidationError(other),
isFormat: true,
});
return this;
}
regexp(regexp) {
this.validationAttributes.push(`pattern="${regexp}"`);
this.addStep({
verifyStep: val => regexp.test(val),
throw: () => new InvalidFormatValidationError(),
isFormat: true,
});
return this;
}
length(length) {
this.addStep({
verifyStep: val => val.length === length,
throw: () => new BadLengthValidationError(length),
isFormat: true,
});
return this;
}
/**
* @param minLength included
* @param maxLength included
*/
between(minLength, maxLength) {
this.addStep({
verifyStep: val => {
const length = val.length;
return length >= minLength && length <= maxLength;
},
throw: () => new BadLengthValidationError(minLength, maxLength),
isFormat: true,
});
return this;
}
/**
* @param min included
*/
min(min) {
this.validationAttributes.push(`min="${min}"`);
this._min = min;
this.addStep({
verifyStep: val => {
return val >= min;
},
throw: () => new OutOfRangeValidationError(this._min, this._max),
isFormat: true,
});
return this;
}
/**
* @param max included
*/
max(max) {
this.validationAttributes.push(`max="${max}"`);
this._max = max;
this.addStep({
verifyStep: val => {
return val <= max;
},
throw: () => new OutOfRangeValidationError(this._min, this._max),
isFormat: true,
});
return this;
}
unique(model, querySupplier) {
this.addStep({
verifyStep: (val, thingName, c) => __awaiter(this, void 0, void 0, function* () {
let query;
if (querySupplier) {
query = querySupplier().where(thingName, val);
}
else {
query = model.constructor.select('1').where(thingName, val);
}
if (typeof model.id === 'number')
query = query.whereNot('id', model.id);
return (yield query.execute(c)).results.length === 0;
}),
throw: () => new AlreadyExistsValidationError(model.table),
isFormat: false,
});
return this;
}
exists(modelClass, foreignKey) {
this.addStep({
verifyStep: (val, thingName, c) => __awaiter(this, void 0, void 0, function* () { return (yield modelClass.select('1').where(foreignKey !== undefined ? foreignKey : thingName, val).execute(c)).results.length >= 1; }),
throw: () => new UnknownRelationValidationError(modelClass.table, foreignKey),
isFormat: false,
});
return this;
}
addStep(step) {
this.steps.push(step);
}
getValidationAttributes() {
return this.validationAttributes;
}
step(step) {
this.validationAttributes.push(`step="${step}"`);
return this;
}
}
export class ValidationBag extends Error {
constructor() {
super(...arguments);
this.messages = {};
}
addMessage(err) {
if (!err.thingName) {
throw new Error('Null thing name');
}
this.messages[err.thingName] = {
name: err.name,
message: err.message,
value: err.value,
};
}
hasMessages() {
return Object.keys(this.messages).length > 0;
}
getMessages() {
return this.messages;
}
}
export class ValidationError extends Error {
get name() {
return this.constructor.name;
}
}
export class BadLengthValidationError extends ValidationError {
constructor(expectedLength, maxLength) {
super();
this.expectedLength = expectedLength;
this.maxLength = maxLength;
}
get message() {
return `${this.thingName} expected length: ${this.expectedLength}${this.maxLength !== undefined ? ` to ${this.maxLength}` : ''}; ` +
`actual length: ${this.value.length}.`;
}
}
export class BadValueValidationError extends ValidationError {
constructor(expectedValue) {
super();
this.expectedValue = expectedValue;
}
get message() {
return `Expected: ${this.expectedValue}; got: ${this.value}.`;
}
}
export class OutOfRangeValidationError extends ValidationError {
constructor(min, max) {
super();
this.min = min;
this.max = max;
}
get message() {
if (this.min === undefined) {
return `${this.thingName} must be at most ${this.max}`;
}
else if (this.max === undefined) {
return `${this.thingName} must be at least ${this.min}`;
}
return `${this.thingName} must be between ${this.min} and ${this.max}.`;
}
}
export class InvalidFormatValidationError extends ValidationError {
get message() {
return `"${this.value}" is not a valid ${this.thingName}.`;
}
}
export class UndefinedValueValidationError extends ValidationError {
get message() {
return `${this.thingName} is required.`;
}
}
export class AlreadyExistsValidationError extends ValidationError {
constructor(table) {
super();
this.table = table;
}
get message() {
return `${this.value} already exists in ${this.table}.${this.thingName}.`;
}
}
export class UnknownRelationValidationError extends ValidationError {
constructor(table, foreignKey) {
super();
this.table = table;
this.foreignKey = foreignKey;
}
get message() {
return `${this.thingName}=${this.value} relation was not found in ${this.table}${this.foreignKey !== undefined ? `.${this.foreignKey}` : ''}.`;
}
}
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Model from \"./Model\";\nimport Query from \"./Query\";\nimport {Connection} from \"mysql\";\n\nexport default class Validator<T> {\n    private readonly steps: ValidationStep<T>[] = [];\n    private readonly validationAttributes: string[] = [];\n\n    private _min?: number;\n    private _max?: number;\n\n    /**\n     * @param thingName The name of the thing to validate.\n     * @param value The value to verify.\n     * @param onlyFormat {@code true} to only validate format properties, {@code false} otherwise.\n     * @param connection A connection to use in case of wrapped transactions.\n     */\n    async execute(thingName: string, value: T | undefined, onlyFormat: boolean, connection?: Connection): Promise<void> {\n        const bag = new ValidationBag();\n\n        for (const step of this.steps) {\n            if (onlyFormat && !step.isFormat) continue;\n\n            const result = step.verifyStep(value, thingName, connection);\n            if ((result === false || result instanceof Promise && (await result) === false) && step.throw) {\n                const error: ValidationError = step.throw();\n                error.thingName = thingName;\n                error.value = value;\n                bag.addMessage(error);\n            } else if (step.interrupt !== undefined && step.interrupt(value)) {\n                break;\n            }\n        }\n\n        if (bag.hasMessages()) {\n            throw bag;\n        }\n    }\n\n    public defined(): Validator<T> {\n        this.validationAttributes.push('required');\n\n        this.addStep({\n            verifyStep: val => val !== undefined,\n            throw: () => new UndefinedValueValidationError(),\n            isFormat: true,\n        });\n        return this;\n    }\n\n    public acceptUndefined(): Validator<T> {\n        this.addStep({\n            verifyStep: () => true,\n            throw: null,\n            interrupt: val => val === undefined || val === null,\n            isFormat: true,\n        });\n        return this;\n    }\n\n    public equals(other?: T): Validator<T> {\n        this.addStep({\n            verifyStep: val => val === other,\n            throw: () => new BadValueValidationError(other),\n            isFormat: true,\n        });\n        return this;\n    }\n\n    public regexp(regexp: RegExp): Validator<T> {\n        this.validationAttributes.push(`pattern=\"${regexp}\"`);\n        this.addStep({\n            verifyStep: val => regexp.test(<string><unknown>val),\n            throw: () => new InvalidFormatValidationError(),\n            isFormat: true,\n        });\n        return this;\n    }\n\n    public length(length: number): Validator<T> {\n        this.addStep({\n            verifyStep: val => (<any>val).length === length,\n            throw: () => new BadLengthValidationError(length),\n            isFormat: true,\n        });\n        return this;\n    }\n\n    /**\n     * @param minLength included\n     * @param maxLength included\n     */\n    public between(minLength: number, maxLength: number): Validator<T> {\n        this.addStep({\n            verifyStep: val => {\n                const length = (<any>val).length;\n                return length >= minLength && length <= maxLength;\n            },\n            throw: () => new BadLengthValidationError(minLength, maxLength),\n            isFormat: true,\n        });\n        return this;\n    }\n\n    /**\n     * @param min included\n     */\n    public min(min: number): Validator<T> {\n        this.validationAttributes.push(`min=\"${min}\"`);\n        this._min = min;\n        this.addStep({\n            verifyStep: val => {\n                return (<any>val) >= min;\n            },\n            throw: () => new OutOfRangeValidationError(this._min, this._max),\n            isFormat: true,\n        });\n        return this;\n    }\n\n    /**\n     * @param max included\n     */\n    public max(max: number): Validator<T> {\n        this.validationAttributes.push(`max=\"${max}\"`);\n        this._max = max;\n        this.addStep({\n            verifyStep: val => {\n                return (<any>val) <= max;\n            },\n            throw: () => new OutOfRangeValidationError(this._min, this._max),\n            isFormat: true,\n        });\n        return this;\n    }\n\n    public unique(model: Model, querySupplier?: () => Query): Validator<T> {\n        this.addStep({\n            verifyStep: async (val, thingName, c) => {\n                let query: Query;\n                if (querySupplier) {\n                    query = querySupplier().where(thingName, val);\n                } else {\n                    query = (<any>model.constructor).select('1').where(thingName, val);\n                }\n                if (typeof model.id === 'number') query = query.whereNot('id', model.id);\n                return (await query.execute(c)).results.length === 0;\n            },\n            throw: () => new AlreadyExistsValidationError(model.table),\n            isFormat: false,\n        });\n        return this;\n    }\n\n    public exists(modelClass: Function, foreignKey?: string): Validator<T> {\n        this.addStep({\n            verifyStep: async (val, thingName, c) => (await (<any>modelClass).select('1').where(foreignKey !== undefined ? foreignKey : thingName, val).execute(c)).results.length >= 1,\n            throw: () => new UnknownRelationValidationError((<any>modelClass).table, foreignKey),\n            isFormat: false,\n        });\n        return this;\n    }\n\n    private addStep(step: ValidationStep<T>) {\n        this.steps.push(step);\n    }\n\n    public getValidationAttributes(): string[] {\n        return this.validationAttributes;\n    }\n\n    public step(step: number): Validator<T> {\n        this.validationAttributes.push(`step=\"${step}\"`);\n        return this;\n    }\n}\n\ninterface ValidationStep<T> {\n    interrupt?: (val?: T) => boolean;\n\n    verifyStep(val: T | undefined, thingName: string, connection?: Connection): boolean | Promise<boolean>;\n\n    throw: ((val?: T) => ValidationError) | null;\n\n    readonly isFormat: boolean;\n}\n\nexport class ValidationBag extends Error {\n    private readonly messages: { [p: string]: any } = {};\n\n    public addMessage(err: ValidationError) {\n        if (!err.thingName) {\n            throw new Error('Null thing name');\n        }\n\n        this.messages[err.thingName] = {\n            name: err.name,\n            message: err.message,\n            value: err.value,\n        };\n    }\n\n    public hasMessages(): boolean {\n        return Object.keys(this.messages).length > 0;\n    }\n\n    public getMessages(): { [p: string]: ValidationError } {\n        return this.messages;\n    }\n}\n\nexport abstract class ValidationError extends Error {\n    public thingName?: string;\n    public value?: any;\n\n    public get name(): string {\n        return this.constructor.name;\n    }\n}\n\nexport class BadLengthValidationError extends ValidationError {\n    private readonly expectedLength: number;\n    private readonly maxLength?: number;\n\n    constructor(expectedLength: number, maxLength?: number) {\n        super();\n        this.expectedLength = expectedLength;\n        this.maxLength = maxLength;\n    }\n\n    public get message(): string {\n        return `${this.thingName} expected length: ${this.expectedLength}${this.maxLength !== undefined ? ` to ${this.maxLength}` : ''}; ` +\n            `actual length: ${this.value.length}.`;\n    }\n}\n\nexport class BadValueValidationError extends ValidationError {\n    private readonly expectedValue: any;\n\n    constructor(expectedValue: any) {\n        super();\n        this.expectedValue = expectedValue;\n    }\n\n    public get message(): string {\n        return `Expected: ${this.expectedValue}; got: ${this.value}.`\n    }\n}\n\nexport class OutOfRangeValidationError extends ValidationError {\n    private readonly min?: number;\n    private readonly max?: number;\n\n    constructor(min?: number, max?: number) {\n        super();\n        this.min = min;\n        this.max = max;\n    }\n\n    public get message(): string {\n        if (this.min === undefined) {\n            return `${this.thingName} must be at most ${this.max}`;\n        } else if (this.max === undefined) {\n            return `${this.thingName} must be at least ${this.min}`;\n        }\n        return `${this.thingName} must be between ${this.min} and ${this.max}.`;\n    }\n}\n\nexport class InvalidFormatValidationError extends ValidationError {\n    public get message(): string {\n        return `\"${this.value}\" is not a valid ${this.thingName}.`;\n    }\n}\n\nexport class UndefinedValueValidationError extends ValidationError {\n    public get message(): string {\n        return `${this.thingName} is required.`;\n    }\n}\n\nexport class AlreadyExistsValidationError extends ValidationError {\n    private readonly table: string;\n\n    constructor(table: string) {\n        super();\n        this.table = table;\n    }\n\n    public get message(): string {\n        return `${this.value} already exists in ${this.table}.${this.thingName}.`;\n    }\n}\n\nexport class UnknownRelationValidationError extends ValidationError {\n    private readonly table: string;\n    private readonly foreignKey?: string;\n\n    constructor(table: string, foreignKey?: string) {\n        super();\n        this.table = table;\n        this.foreignKey = foreignKey;\n    }\n\n    public get message(): string {\n        return `${this.thingName}=${this.value} relation was not found in ${this.table}${this.foreignKey !== undefined ? `.${this.foreignKey}` : ''}.`;\n    }\n}"]}