#!/usr/bin/env python3

# import sys
# sys.path.append("/home/jez/prj/bell/training/tiger-ansible/ext/ansible-tree")


import sys
import yaml
import anyconfig
from pprint import pprint

from ansible_tree.files import BackendsManager, RulesManager
from ansible_tree.utils import schema_validate
import anyconfig
# from box import Box
from pathlib import Path

import logging
log = logging.getLogger(__name__)



class Query():

    matcher_merge_schema = {
        "$schema": 'http://json-schema.org/draft-04/schema#',
        "oneOf": [
            {
                "type": "array",
                "mergeStrategy": "append",
#                    "mergeStrategy": "arrayMergeById",
            },
            {
                "type": "object",
                "mergeStrategy": "objectMerge",
            },
            {
                "type": "string",
                "mergeStrategy": "overwrite",
            },
            {
                "type": "number",
                "mergeStrategy": "overwrite",
            },
            {
                "type": "null",
                "mergeStrategy": "overwrite",
            },
        ],
    }

    def __init__(self, app):

        self.app = app

        self.key = None
        self.scope = None

        self.paths = None
        self.data = None
        self.result = None


        self.matcher_schema = {
            "$schema": 'http://json-schema.org/draft-04/schema#',
            "type": "object",
            "additionalProperties": False,
            "properties": {
                "rule": {
                    "type": "string",
                    "default": ".*",
                    "optional": True,
                    },
                "strategy": {
                    "type": "string",
                    "default": "merge",
                    "optional": True,
                    "enum": ["first", "last", "merge"],
                    },
                "schema": {
                    "type": "object",
                    "default": self.matcher_merge_schema,
                    #"default": {},
                    "optional": True,
                    },
                }
            }



    def exec(self, key=None, scope=None, policy=None, trace=False, explain=False):

        bm = BackendsManager(app=self.app)
        mm = RulesManager(app=self.app)

        log.debug(f"New query created")
        candidates = bm.query(key, scope, trace=trace)
        result = mm.get_result(candidates, key=key, trace=trace, explain=explain)
        return result

    def dump(self):

        ret = {}
        for i in dir(self):
            if not i.startswith('_'):
                ret[i] = getattr(self, i)

        pprint (ret)



class App():

    schema = {
        "$schema": 'http://json-schema.org/draft-04/schema#',
        "type": "object",
        "additionalProperties": False,
        "default": {},
        "patternProperties": {
            ".*": {
                "type": "object",
                "optional": True,
                "additionalProperties": False,
                "properties": {
                    "config": {
                            "type": "object",
                            "default": {},
                            "additionalProperties": False,
                            "properties": {
                                "app": {
                                        "type": "object",
                                        "default": {},
                                        "additionalProperties": False,
                                        "properties": {
                                            "root": {
                                                "type": "string",
                                                "default": None,
                                            },
                                        },
                                    },

                                "tree": {
                                        #"additionalProperties": False,
                                        "type": "object",
                                        "default": {},
                                    },
                                "rules": {
                                        "type": "object",
                                        "default": {},
                                    },
                                },
                                
                        },
                    "tree": {
                            "type": "array",
                            "default": [],
                        },
                    "rules": {
                            "type": "array",
                            "default": [],
                        },
                    },
                },
            }
        }

    def __init__(self, config="albero.yml", namespace='default'):
        conf2 = anyconfig.load(config)

        # Validate configuration
        schema_validate(conf2, self.schema)
        try:
            conf2 = conf2[namespace]
        except KeyError:
            log.error (f"Can't find namespace '{namespace}' in config '{config}'")
            sys.exit(1)


        # Init
        if not conf2['config']['app']['root']:
            conf2['config']['app']['root'] = Path(config).parent
        else:
            conf2['config']['app']['root'] = Path(conf2['config']['app']['root'])

        # Finish
        self.conf2 = dict(conf2)

    def lookup(self, key=None, policy=None, scope=None, trace=False, explain=False):
        log.debug(f"Lookup key {key} with scope: {scope}")
        q = Query(app = self)
        r = q.exec(key=key, scope=scope , policy=policy, trace=trace, explain=explain)

        print ("=== Query Result ===")
        print(anyconfig.dumps(r, ac_parser='yaml'))
        print ("=== Query Result ===")


if __name__ == "__main__":
    CONFIG_FILE='/home/jez/prj/bell/training/tiger-ansible/tree.yml'
    app = App(CONFIG_FILE)

    policy = None

    #app.lookup(
    #    "my_key",
    #    policy=None,
    #    hostname="myhost-lab.it.ms.bell.ca",
    #    hostgroups=["Tiger", "Tiger/Test", "Tiger/Test/LastLvl"],
    #    hostgroup="Tiger/Test/LastLvl"
    #        )


#    app.lookup(
#        None,
#        hostname="myhost-lab.it.ms.bell.ca",
#        hostgroups=["Tiger", "Tiger/Test", "Tiger/Test/LastLvl"],
#        hostgroup="Tiger/Test/LastLvl"
#            )
#


    print ("OKKKKK")