break code into submodules (#7)

* store cards in ZillowHomeFinder

* move code to subfiles

Author: Wil T

src/browser_automation.py

@@ -0,0 +1,106 @@
+import logging
+from random import SystemRandom
+
+from patchright.async_api import Error as PlaywrightError
+from patchright.async_api import Page
+
+logger = logging.getLogger(__name__)
+cryptogen = SystemRandom()
+
+
+async def _scroll_and_load_listings(page: Page, max_entries: int = 100, max_no_change: int = 3, max_scroll_attempts: int = 50) -> None:
+    """Scroll through search results to trigger lazy loading."""
+    await page.wait_for_selector('[class*="search-page-list-container"]', timeout=10000)
+
+    previous_count = 0
+    no_change_iterations = 0
+
+    for iteration in range(max_scroll_attempts):
+        current_cards = await page.query_selector_all('article[data-test="property-card"]')
+        current_count = len(current_cards)
+
+        msg = f"Iteration {iteration + 1}: Found {current_count} property cards"
+        logger.info(msg)
+
+        if current_count >= max_entries:
+            msg = f"Reached target of {max_entries} entries"
+            logger.info(msg)
+            break
+
+        # Check if we've reached the bottom of the page (element is visible on screen)
+        bottom_element = await page.query_selector("div.search-list-save-search-parent")
+        if bottom_element:
+            # Check if the element is actually visible in the viewport
+            is_visible = await page.evaluate(
+                """
+                    (element) => {
+                        const rect = element.getBoundingClientRect();
+                        return rect.top < window.innerHeight && rect.bottom > 0;
+                    }
+                """,
+                bottom_element,
+            )
+
+            if is_visible:
+                msg = "Reached bottom of page (search-list-save-search-parent element is visible)"
+                logger.info(msg)
+                break
+
+        if current_count == previous_count:
+            no_change_iterations += 1
+            if no_change_iterations >= max_no_change:
+                logger.info("No new content loaded after several attempts, stopping")
+                break
+        else:
+            no_change_iterations = 0
+
+        previous_count = current_count
+
+        # Scroll down by a random amount (simulate human-like scrolling)
+        scroll_amount = cryptogen.randint(300, 800)
+
+        try:
+            await page.evaluate(f"""
+                const searchContainer = document.querySelector('[class*="search-page-list-container"]');
+                searchContainer.scrollTop += {scroll_amount};
+            """)
+        except PlaywrightError as e:
+            wrn = f"Scroll attempt failed: {e}, trying window scroll"
+            logger.warning(wrn)
+            await page.evaluate(f"window.scrollBy(0, {scroll_amount})")
+
+        # Random wait time between scrolls (1-4 seconds)
+        wait_time = cryptogen.randint(1000, 4000)
+        await page.wait_for_timeout(wait_time)
+
+        # Occasionally scroll back up a bit to simulate more natural browsing
+        scroll_up_chance: float = 0.15
+        if iteration > 0 and cryptogen.random() < scroll_up_chance:
+            back_scroll = cryptogen.randint(100, 300)
+            try:
+                await page.evaluate(f"""
+const searchContainer = document.querySelector('[class*="search-page-list-container"]');
+                                    searchContainer.scrollTop += {back_scroll};
+                                    """)
+            except PlaywrightError as e:
+                wrn = f"Scroll attempt failed: {e}, trying window scroll"
+                logger.warning(wrn)
+                await page.evaluate(f"window.scrollBy(0, -{back_scroll})")
+
+            await page.wait_for_timeout(cryptogen.randint(500, 1500))
+
+    final_cards = await page.query_selector_all('article[data-test="property-card"]')
+    final_count = len(final_cards)
+    msg = f"Lazy loading complete. Total property cards loaded: {final_count}"
+    logger.info(msg)
+
+    # Scroll back to top to ensure all content is properly rendered
+    await page.evaluate("""
+const searchContainer = document.querySelector('[class*="search-page-list-container"]');
+if (searchContainer) {
+searchContainer.scrollTop = 0;
+} else {
+window.scrollTo(0, 0);
+}
+    """)
+    await page.wait_for_timeout(1500)

src/constants.py

@@ -0,0 +1,18 @@
+from typing import ClassVar
+
+
+class ZillowURLs:
+    """Constants for Zillow request handling."""
+
+    ZILLOW_URL: ClassVar[str] = "https://www.zillow.com/brunswick-me-04011/rentals/"
+    CLONE_URL: ClassVar[str] = "https://appbrewery.github.io/Zillow-Clone/"
+
+
+class GoogleFormConstants:
+    """Constants for Google Form submission."""
+
+    FORM_URL: ClassVar[str] = "https://docs.google.com/forms/d/e/1FAIpQLSfYrPaEL7FXI_wGYiQLUYLuqTijKaE4ZPQTL2LLTGNy6m_cYg/viewform"
+    ADDRESS_INPUT_XPATH: ClassVar[str] = 'xpath=//*[@id="mG61Hd"]/div[2]/div/div[2]/div[1]/div/div/div[2]/div/div[1]/div/div[1]/input'
+    PRICE_INPUT_XPATH: ClassVar[str] = 'xpath=//*[@id="mG61Hd"]/div[2]/div/div[2]/div[2]/div/div/div[2]/div/div[1]/div/div[1]/input'
+    LINK_INPUT_XPATH: ClassVar[str] = 'xpath=//*[@id="mG61Hd"]/div[2]/div/div[2]/div[3]/div/div/div[2]/div/div[1]/div/div[1]/input'
+    SUBMIT_BUTTON_XPATH: ClassVar[str] = 'xpath=//*[@id="mG61Hd"]/div[2]/div/div[3]/div/div[1]/div'

src/exceptions.py

@@ -0,0 +1,2 @@
+class ZillowParseError(Exception):
+    """Custom exception for Zillow scraping errors."""

src/form_submission.py

@@ -0,0 +1,19 @@
+import logging
+from random import SystemRandom
+
+from patchright.async_api import Page
+
+from src.constants import GoogleFormConstants
+
+logger = logging.getLogger(__name__)
+cryptogen = SystemRandom()
+
+
+async def _submit_form(page: Page, url: str, address: str, price: str, link: str) -> None:
+    await page.goto(url)
+    await page.wait_for_timeout(cryptogen.randint(1000, 3000))
+    await page.fill(GoogleFormConstants.ADDRESS_INPUT_XPATH, address)
+    await page.fill(GoogleFormConstants.PRICE_INPUT_XPATH, price)
+    await page.fill(GoogleFormConstants.LINK_INPUT_XPATH, link)
+    await page.click(GoogleFormConstants.SUBMIT_BUTTON_XPATH)
+    await page.wait_for_timeout(cryptogen.randint(1000, 3000))