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Merge pull request #229 from getmaxun/login-scrape

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feat: extract behind login
This commit is contained in:
Karishma Shukla
2024-12-09 21:15:58 +05:30
committed by GitHub
parent 763bc8284f a30211de6d
commit 863ad23f96
6 changed files with 217 additions and 50 deletions
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176
maxun-core/src/interpret.ts
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@@ -121,6 +121,53 @@ export default class Interpreter extends EventEmitter {
}
}
// private getSelectors(workflow: Workflow, actionId: number): string[] {
// const selectors: string[] = [];
// // Validate actionId
// if (actionId <= 0) {
// console.log("No previous selectors to collect.");
// return selectors; // Empty array as there are no previous steps
// }
// // Iterate from the start up to (but not including) actionId
// for (let index = 0; index < actionId; index++) {
// const currentSelectors = workflow[index]?.where?.selectors;
// console.log(`Selectors at step ${index}:`, currentSelectors);
// if (currentSelectors && currentSelectors.length > 0) {
// currentSelectors.forEach((selector) => {
// if (!selectors.includes(selector)) {
// selectors.push(selector); // Avoid duplicates
// }
// });
// }
// }
// console.log("Collected Selectors:", selectors);
// return selectors;
// }
private getSelectors(workflow: Workflow): string[] {
const selectorsSet = new Set<string>();
if (workflow.length === 0) {
return [];
}
for (let index = workflow.length - 1; index >= 0; index--) {
const currentSelectors = workflow[index]?.where?.selectors;
if (currentSelectors && currentSelectors.length > 0) {
currentSelectors.forEach((selector) => selectorsSet.add(selector));
return Array.from(selectorsSet);
}
}
return [];
}
/**
* Returns the context object from given Page and the current workflow.\
* \
@@ -130,52 +177,63 @@ export default class Interpreter extends EventEmitter {
* @param workflow Current **initialized** workflow (array of where-what pairs).
* @returns {PageState} State of the current page.
*/
private async getState(page: Page, workflow: Workflow): Promise<PageState> {
private async getState(page: Page, workflowCopy: Workflow, selectors: string[]): Promise<PageState> {
/**
* All the selectors present in the current Workflow
*/
const selectors = Preprocessor.extractSelectors(workflow);
// const selectors = Preprocessor.extractSelectors(workflow);
// console.log("Current selectors:", selectors);
/**
* Determines whether the element targetted by the selector is [actionable](https://playwright.dev/docs/actionability).
* @param selector Selector to be queried
* @returns True if the targetted element is actionable, false otherwise.
*/
const actionable = async (selector: string): Promise<boolean> => {
try {
const proms = [
page.isEnabled(selector, { timeout: 500 }),
page.isVisible(selector, { timeout: 500 }),
];
// const actionable = async (selector: string): Promise<boolean> => {
// try {
// const proms = [
// page.isEnabled(selector, { timeout: 5000 }),
// page.isVisible(selector, { timeout: 5000 }),
// ];
return await Promise.all(proms).then((bools) => bools.every((x) => x));
} catch (e) {
// log(<Error>e, Level.ERROR);
return false;
}
};
// return await Promise.all(proms).then((bools) => bools.every((x) => x));
// } catch (e) {
// // log(<Error>e, Level.ERROR);
// return false;
// }
// };
/**
* Object of selectors present in the current page.
*/
const presentSelectors: SelectorArray = await Promise.all(
selectors.map(async (selector) => {
if (await actionable(selector)) {
return [selector];
}
return [];
}),
).then((x) => x.flat());
// const presentSelectors: SelectorArray = await Promise.all(
// selectors.map(async (selector) => {
// if (await actionable(selector)) {
// return [selector];
// }
// return [];
// }),
// ).then((x) => x.flat());
const action = workflowCopy[workflowCopy.length - 1];
// console.log("Next action:", action)
let url: any = page.url();
if (action && action.where.url !== url && action.where.url !== "about:blank") {
url = action.where.url;
}
return {
url: page.url(),
url,
cookies: (await page.context().cookies([page.url()]))
.reduce((p, cookie) => (
{
...p,
[cookie.name]: cookie.value,
}), {}),
selectors: presentSelectors,
selectors,
};
}
@@ -365,6 +423,7 @@ export default class Interpreter extends EventEmitter {
console.log("MERGED results:", mergedResult);
await this.options.serializableCallback(mergedResult);
// await this.options.serializableCallback(scrapeResult);
},
scrapeList: async (config: { listSelector: string, fields: any, limit?: number, pagination: any }) => {
@@ -546,11 +605,31 @@ export default class Interpreter extends EventEmitter {
return allResults;
}
private getMatchingActionId(workflow: Workflow, pageState: PageState, usedActions: string[]) {
for (let actionId = workflow.length - 1; actionId >= 0; actionId--) {
const step = workflow[actionId];
const isApplicable = this.applicable(step.where, pageState, usedActions);
console.log("-------------------------------------------------------------");
console.log(`Where:`, step.where);
console.log(`Page state:`, pageState);
console.log(`Match result: ${isApplicable}`);
console.log("-------------------------------------------------------------");
if (isApplicable) {
return actionId;
}
}
}
private async runLoop(p: Page, workflow: Workflow) {
const workflowCopy: Workflow = JSON.parse(JSON.stringify(workflow));
// apply ad-blocker to the current page
await this.applyAdBlocker(p);
const usedActions: string[] = [];
let selectors: string[] = [];
let lastAction = null;
let actionId = -1
let repeatCount = 0;
/**
@@ -559,7 +638,7 @@ export default class Interpreter extends EventEmitter {
* e.g. via `enqueueLinks`.
*/
p.on('popup', (popup) => {
this.concurrency.addJob(() => this.runLoop(popup, workflow));
this.concurrency.addJob(() => this.runLoop(popup, workflowCopy));
});
/* eslint no-constant-condition: ["warn", { "checkLoops": false }] */
@@ -578,8 +657,11 @@ export default class Interpreter extends EventEmitter {
}
let pageState = {};
let getStateTest = "Hello";
try {
pageState = await this.getState(p, workflow);
pageState = await this.getState(p, workflowCopy, selectors);
selectors = [];
console.log("Empty selectors:", selectors)
} catch (e: any) {
this.log('The browser has been closed.');
return;
@@ -589,32 +671,52 @@ export default class Interpreter extends EventEmitter {
this.log(`Current state is: \n${JSON.stringify(pageState, null, 2)}`, Level.WARN);
}
const actionId = workflow.findIndex((step) => {
const isApplicable = this.applicable(step.where, pageState, usedActions);
console.log(`Where:`, step.where);
console.log(`Page state:`, pageState);
console.log(`Match result: ${isApplicable}`);
return isApplicable;
});
// const actionId = workflow.findIndex((step) => {
// const isApplicable = this.applicable(step.where, pageState, usedActions);
// console.log("-------------------------------------------------------------");
// console.log(`Where:`, step.where);
// console.log(`Page state:`, pageState);
// console.log(`Match result: ${isApplicable}`);
// console.log("-------------------------------------------------------------");
// return isApplicable;
// });
const action = workflow[actionId];
actionId = this.getMatchingActionId(workflowCopy, pageState, usedActions);
const action = workflowCopy[actionId];
console.log("MATCHED ACTION:", action);
console.log("MATCHED ACTION ID:", actionId);
this.log(`Matched ${JSON.stringify(action?.where)}`, Level.LOG);
if (action) { // action is matched
if (this.options.debugChannel?.activeId) {
this.options.debugChannel.activeId(actionId);
}
repeatCount = action === lastAction ? repeatCount + 1 : 0;
if (this.options.maxRepeats && repeatCount >= this.options.maxRepeats) {
console.log("REPEAT COUNT", repeatCount);
if (this.options.maxRepeats && repeatCount > this.options.maxRepeats) {
return;
}
lastAction = action;
try {
console.log("Carrying out:", action.what);
await this.carryOutSteps(p, action.what);
usedActions.push(action.id ?? 'undefined');
workflowCopy.splice(actionId, 1);
console.log(`Action with ID ${action.id} removed from the workflow copy.`);
// const newSelectors = this.getPreviousSelectors(workflow, actionId);
const newSelectors = this.getSelectors(workflowCopy);
newSelectors.forEach(selector => {
if (!selectors.includes(selector)) {
selectors.push(selector);
}
});
} catch (e) {
this.log(<Error>e, Level.ERROR);
}