add screenshotter script

utils/screenshot.py

@@ -0,0 +1,60 @@
+import pathlib
+import time
+
+from selenium import webdriver
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support import expected_conditions as EC
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.chrome.options import Options
+from selenium.webdriver.chrome.service import Service
+from webdriver_manager.chrome import ChromeDriverManager
+
+
+# URL = "http://localhost:9000/"
+URL = "http://localhost:9000/#/expansions"
+WAIT_TIME = 180
+
+
+def main():
+    # define screenshot file
+    screenshot_file = (
+        (pathlib.Path(__file__).resolve().parents[0] / "base_production_chains").with_suffix(".png")
+        if "expansions" not in URL
+        else (pathlib.Path(__file__).resolve().parents[0] / "expansion_production_chains").with_suffix(".png")
+    )
+
+    # create chrome options
+    options = Options()
+    options.add_experimental_option("detach", True)
+    options.add_argument("--headless")
+
+    # create driver
+    driver = webdriver.Chrome(service=Service(ChromeDriverManager().install()), options=options)
+    driver.maximize_window()
+
+    # open quasar app locally
+    driver.get(url=URL)
+
+    # wait for page to load
+    WebDriverWait(driver=driver, timeout=10.0).until(
+        EC.presence_of_element_located((By.XPATH, "//main[contains(@class, 'q-page')]"))
+    )
+    print(f"Waiting {WAIT_TIME}s for page to load.")
+    time.sleep(WAIT_TIME)
+
+    # get page width and height
+    # https://stackoverflow.com/questions/41721734/take-screenshot-of-full-page-with-selenium-python-with-chromedriver/52572919#52572919
+    original_size = driver.get_window_size()
+    page_width = driver.execute_script("return document.body.parentNode.scrollWidth")
+    page_height = driver.execute_script("return document.body.parentNode.scrollHeight")
+    driver.set_window_size(width=page_width, height=page_height)
+
+    element = driver.find_element(by=By.XPATH, value="//main[contains(@class, 'q-page')]")
+    element.screenshot(str(screenshot_file))
+
+    print(f"saved screenshot to {screenshot_file}")
+    driver.quit()
+
+
+if __name__ == "__main__":
+    main()