import os
import frappe


def after_install():
	"""Executed after the app is installed on a site."""
	setup_default_files()


def after_migrate():
	"""Executed after 'bench migrate' is run on a site."""
	setup_default_files()


def setup_default_files():
	"""Ensure default app assets (e.g., hospital.png) are added to the Frappe File DocType.

	This makes the image available at '/files/hospital.png' and visible in Desk File List.
	"""
	files_to_setup = [
		{
			"file_name": "hospital.png",
			"relative_path": ["public", "images", "hospital.png"],
			"fallback_relative_path": ["public", "asm_app", "hospital.png"],
			"is_private": 0,
			"folder": "Home",
		}
	]

	for item in files_to_setup:
		file_name = item["file_name"]

		# 1. Check if the file already exists in File DocType
		if frappe.db.exists("File", {"file_name": file_name}) or frappe.db.exists("File", {"file_url": f"/files/{file_name}"}):
			continue

		# 2. Locate the source file in app directory
		source_path = frappe.get_app_path("asm_ui_app", *item["relative_path"])
		if not os.path.exists(source_path) and "fallback_relative_path" in item:
			source_path = frappe.get_app_path("asm_ui_app", *item["fallback_relative_path"])

		if not os.path.exists(source_path):
			frappe.logger().warning(f"[asm_ui_app] Source file not found for default file setup: {source_path}")
			continue

		# 3. Read binary content
		with open(source_path, "rb") as f:
			file_content = f.read()

		# 4. Create Frappe File document
		# Setting is_private=0 and providing content automatically writes to sites/<site>/public/files/<file_name>
		try:
			file_doc = frappe.get_doc({
				"doctype": "File",
				"file_name": file_name,
				"content": file_content,
				"is_private": item.get("is_private", 0),
				"folder": item.get("folder", "Home"),
			})
			file_doc.insert(ignore_permissions=True)
			frappe.db.commit()
			frappe.logger().info(f"[asm_ui_app] Successfully added default file '{file_name}' to File DocType.")
		except Exception as e:
			frappe.logger().error(f"[asm_ui_app] Failed to add default file '{file_name}' to File DocType: {e}")