# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd.
# MIT License. See license.txt 

# called from wnf.py
# lib/wnf.py --install [rootpassword] [dbname] [source]

from __future__ import unicode_literals

import os, sys, json
import webnotes, conf
import webnotes.db
import getpass
from webnotes.model.db_schema import DbManager
from webnotes.model.sync import sync_for

class Installer:
	def __init__(self, root_login, root_password=None):
		if root_login:
			if not root_password:
				root_password = getattr(conf, "root_password", None)
			if not root_password:
				root_password = getpass.getpass("MySQL root password: ")
			
		self.root_password = root_password
				
		self.conn = webnotes.db.Database(user=root_login, password=root_password)
		webnotes.conn=self.conn
		webnotes.session= webnotes._dict({'user':'Administrator'})
		self.dbman = DbManager(self.conn)

	def import_from_db(self, target, source_path='', password = 'admin', verbose=0):
		"""
		a very simplified version, just for the time being..will eventually be deprecated once the framework stabilizes.
		"""
		# delete user (if exists)
		self.dbman.delete_user(target)

		# create user and db
		self.dbman.create_user(target, conf.db_password)
			
		if verbose: print "Created user %s" % target
	
		# create a database
		self.dbman.create_database(target)
		if verbose: print "Created database %s" % target
		
		# grant privileges to user
		self.dbman.grant_all_privileges(target,target)
		if verbose: print "Granted privileges to user %s and database %s" % (target, target)

		# flush user privileges
		self.dbman.flush_privileges()

		self.conn.use(target)
		
		# import in target
		if verbose: print "Starting database import..."

		# get the path of the sql file to import
		source_given = True
		if not source_path:
			source_given = False
			source_path = os.path.join(os.path.dirname(webnotes.__file__), "..", 'conf', 'Framework.sql')

		self.dbman.restore_database(target, source_path, target, conf.db_password)
		if verbose: print "Imported from database %s" % source_path

		# fresh app
		if 'Framework.sql' in source_path:
			print "Installing app..."
			self.install_app()

		# update admin password
		self.create_auth_table()
		self.update_admin_password(password)

		return target
		
	def install_app(self):
		sync_for("lib", force=True, sync_everything=True)
		self.import_core_docs()

		try:
			from startup import install
		except ImportError, e:
			install = None

		if os.path.exists("app"):
			sync_for("app", force=True, sync_everything=True)
			
		if os.path.exists(os.path.join("app", "startup", "install_fixtures")):
			self.import_fixtures()

		print "Completing App Import..."
		install and install.post_import()
		print "Updating patches..."
		self.set_all_patches_as_completed()
		self.assign_all_role_to_administrator()

	def update_admin_password(self, password):
		from webnotes.auth import update_password
		webnotes.conn.begin()
		update_password("Administrator", getattr(conf, "admin_password", password))
		webnotes.conn.commit()
	
	def import_fixtures(self):
		print "Importing install fixtures..."
		for basepath, folders, files in os.walk(os.path.join("app", "startup", "install_fixtures")):
			for f in files:
				if f.endswith(".json"):
					print "Importing " + f
					with open(os.path.join(basepath, f), "r") as infile:
						webnotes.bean(json.loads(infile.read())).insert_or_update()
						webnotes.conn.commit()

				if f.endswith(".csv"):
					from core.page.data_import_tool import data_import_tool
					from webnotes.utils.datautils import read_csv_content
					print "Importing " + f
					with open(os.path.join(basepath, f), "r") as infile:
						data_import_tool.upload(rows = read_csv_content(infile.read()))
						webnotes.conn.commit()
	
	def import_core_docs(self):
		install_docs = [
			# profiles
			{'doctype':'Profile', 'name':'Administrator', 'first_name':'Administrator', 
				'email':'admin@localhost', 'enabled':1},
			{'doctype':'Profile', 'name':'Guest', 'first_name':'Guest',
				'email':'guest@localhost', 'enabled':1},

			# userroles
			{'doctype':'UserRole', 'parent': 'Administrator', 'role': 'Administrator', 
				'parenttype':'Profile', 'parentfield':'user_roles'},
			{'doctype':'UserRole', 'parent': 'Guest', 'role': 'Guest', 
				'parenttype':'Profile', 'parentfield':'user_roles'},
				
			{'doctype': "Role", "role_name": "Report Manager"}
		]
		
		webnotes.conn.begin()
		for d in install_docs:
			doc = webnotes.doc(fielddata=d)
			doc.insert()
		webnotes.conn.commit()
	
	def set_all_patches_as_completed(self):
		try:
			from patches.patch_list import patch_list
		except ImportError, e:
			print "No patches to update."
			return
		
		for patch in patch_list:
			webnotes.doc({
				"doctype": "Patch Log",
				"patch": patch
			}).insert()
		webnotes.conn.commit()
		
	def assign_all_role_to_administrator(self):
		webnotes.bean("Profile", "Administrator").get_controller().add_roles(*webnotes.conn.sql_list("""
			select name from tabRole"""))
		webnotes.conn.commit()

	def create_auth_table(self):
		webnotes.conn.sql("""drop table if exists __Auth""")
		webnotes.conn.sql("""create table __Auth (
		`user` VARCHAR(180) NOT NULL PRIMARY KEY,
		`password` VARCHAR(180) NOT NULL
		) ENGINE=InnoDB DEFAULT CHARSET=utf8""")