# Copyright (c) 2019, Frappe Technologies Pvt. Ltd. and contributors
# For license information, please see license.txt


import frappe
from frappe import _
from frappe.model.document import Document
from frappe.utils import get_link_to_form


class ProjectTemplate(Document):
	# begin: auto-generated types
	# This code is auto-generated. Do not modify anything in this block.

	from typing import TYPE_CHECKING

	if TYPE_CHECKING:
		from frappe.types import DF

		from erpnext.projects.doctype.project_template_task.project_template_task import (
			ProjectTemplateTask,
		)

		disabled: DF.Check
		project_type: DF.Link | None
		tasks: DF.Table[ProjectTemplateTask]
	# end: auto-generated types

	def validate(self):
		self.validate_template_tasks()
		self.validate_dependencies()

	def validate_template_tasks(self):
		tasks = {
			task.name: task
			for task in frappe.get_all(
				"Task",
				filters={"name": ["in", [row.task for row in self.tasks]]},
				fields=["name", "is_template", "parent_task", "start", "duration"],
			)
		}
		for row in self.tasks:
			task = tasks[row.task]
			if not task.is_template:
				frappe.throw(
					_("Row {0}: Task {1} is not a Template Task").format(
						row.idx, get_link_to_form("Task", task.name)
					)
				)

			parent = tasks.get(task.parent_task)
			if parent and task.start + task.duration > parent.start + parent.duration:
				frappe.throw(
					_("Row {0}: Task {1} ends after its parent task {2}").format(
						row.idx, get_link_to_form("Task", task.name), get_link_to_form("Task", parent.name)
					)
				)

	def validate_dependencies(self):
		for task in self.tasks:
			task_details = frappe.get_doc("Task", task.task)
			if task_details.depends_on:
				for dependency_task in task_details.depends_on:
					if not self.check_dependent_task_presence(dependency_task.task):
						task_details_format = get_link_to_form("Task", task_details.name)
						dependency_task_format = get_link_to_form("Task", dependency_task.task)
						frappe.throw(
							_("Task {0} depends on Task {1}. Please add Task {1} to the Tasks list.").format(
								frappe.bold(task_details_format), frappe.bold(dependency_task_format)
							)
						)

	def check_dependent_task_presence(self, task):
		for task_details in self.tasks:
			if task_details.task == task:
				return True
		return False