from flask import json
from flask_classy import FlaskView, route
from git import Repo, Git

from modules.app_config import cbpi

import pprint
import time


class SystemView(FlaskView):
    def doShutdown(self):
        time.sleep(5)
        from subprocess import call
        call("halt")

    @route('/shutdown', methods=['POST'])
    def shutdown(self):
        """
        Shutdown hook
        :return: HTTP 204
        """
        self.doShutdown()

        return ('', 204)

    def doReboot(self):
        time.sleep(5)
        from subprocess import call
        call("reboot")

    @route('/reboot', methods=['POST'])
    def reboot(self):
        """
        Reboot hook
        :return: HTTP 204
        """
        self.doReboot()

        return ('', 204)

    @route('/tags/<name>', methods=['GET'])
    def checkout_tag(self,name):
        repo = Repo('./')
        repo.git.reset('--hard')
        o = repo.remotes.origin
        o.fetch()
        g = Git('./')
        g.checkout(name)
        cbpi.notify("Checkout successful", "Please restart the system")
        return ('', 204)

    @route('/git/status', methods=['GET'])
    def git_status(self):
        repo = Repo('./')
        o = repo.remotes.origin
        o.fetch()
        # Tags
        tags = []
        for t in repo.tags:
            tags.append({"name": t.name, "commit": str(t.commit), "date": t.commit.committed_date,
                         "committer": t.commit.committer.name, "message": t.commit.message})
        try:
            branch_name = repo.active_branch.name
            # test1
        except:
            branch_name = None

        changes = []
        commits_behind = repo.iter_commits('master..origin/master')

        for c in list(commits_behind):
            changes.append({"committer": c.committer.name, "message": c.message})

        return json.dumps({"tags": tags, "headcommit": str(repo.head.commit), "branchname": branch_name,
                           "master": {"changes": changes}})

    @route('/check_update', methods=['GET'])
    def check_update(self):

        repo = Repo('./')
        o = repo.remotes.origin
        o.fetch()
        changes = []
        commits_behind = repo.iter_commits('master..origin/master')

        for c in list(commits_behind):
            changes.append({"committer": c.committer.name, "message": c.message})

        return json.dumps(changes)

    @route('/git/pull', methods=['POST'])
    def update(self):
        repo = Repo('./')
        o = repo.remotes.origin
        info = o.pull()
        cbpi.notify("Pull successful", "The lasted updated was downloaded. Please restart the system")
        return ('', 204)

    @route('/dump', methods=['GET'])
    def dump(self):
        return json.dumps(cbpi.cache)

@cbpi.initalizer()
def init(cbpi):
    print "INITIALIZE SYSTEM MODULE"
    SystemView.register(cbpi.app, route_base='/api/system')