from plone.app.discussion.interfaces import IDiscussionSettings
from plone.registry.interfaces import IRegistry
from Products.CMFCore.utils import getToolByName
from zope.component import getUtility
from plone import api
from datetime import timezone

import logging


default_profile = "profile-plone.app.discussion:default"
logger = logging.getLogger("plone.app.discussion")


def update_registry(context):
    registry = getUtility(IRegistry)
    registry.registerInterface(IDiscussionSettings)


def update_rolemap(context):
    context.runImportStepFromProfile(default_profile, "rolemap")


def upgrade_comment_workflows_retain_current_workflow(context):
    # If the current comment workflow is the one_state_workflow, running our
    # import step will change it to comment_one_state_workflow.  This is good.
    # If it was anything else, we should restore this.  So get the original
    # chain.
    portal_type = "Discussion Item"
    wf_tool = getToolByName(context, "portal_workflow")
    orig_chain = list(wf_tool.getChainFor(portal_type))

    # Run the workflow step.  This sets the chain to
    # comment_one_state_workflow.
    context.runImportStepFromProfile(default_profile, "workflow")

    # Restore original workflow chain if needed.
    old_workflow = "one_state_workflow"
    if old_workflow not in orig_chain:
        # Restore the chain.  Probably comment_review_workflow.
        wf_tool.setChainForPortalTypes([portal_type], orig_chain)
    elif len(orig_chain) > 1:
        # This is strange, but I guess it could happen.
        if old_workflow in orig_chain:
            # Replace with new one.
            idx = orig_chain.index(old_workflow)
            orig_chain[idx] = "comment_one_state_workflow"
        # Restore the chain.
        wf_tool.setChainForPortalTypes([portal_type], orig_chain)


def upgrade_comment_workflows_apply_rolemapping(context):
    # Now go over the comments, update their role mappings, and reindex the
    # allowedRolesAndUsers index.
    portal_type = "Discussion Item"
    catalog = getToolByName(context, "portal_catalog")
    wf_tool = getToolByName(context, "portal_workflow")
    new_chain = list(wf_tool.getChainFor(portal_type))
    workflows = [wf_tool.getWorkflowById(wf_id) for wf_id in new_chain]
    for brain in catalog.unrestrictedSearchResults(portal_type=portal_type):
        try:
            comment = brain.getObject()
            for wf in workflows:
                wf.updateRoleMappingsFor(comment)
            comment.reindexObjectSecurity()
        except (AttributeError, KeyError):
            logger.info(f"Could not reindex comment {brain.getURL()}")


def upgrade_comment_workflows(context):
    upgrade_comment_workflows_retain_current_workflow(context)
    upgrade_comment_workflows_apply_rolemapping(context)


def add_js_to_plone_legacy(context):
    context.runImportStepFromProfile(default_profile, "plone.app.registry")


def extend_review_workflow(context):
    """Apply changes made to review workflow."""
    upgrade_comment_workflows_retain_current_workflow(context)


def set_timezone_on_dates(context):
    """Ensure timezone data is stored against all creation/modified dates"""
    pc = api.portal.get_tool('portal_catalog')
    creations = 0
    modifieds = 0
    logger.info('Setting timezone information on comment dates')
    comments = pc.search({'Type': 'Comment'})
    for cbrain in comments:
        comment = cbrain.getObject()
        if not comment.creation_date.tzinfo:
            creations += 1
            comment.creation_date = \
                comment.creation_date.astimezone(timezone.utc)
        if not comment.modification_date.tzinfo:
            modifieds += 1
            comment.modification_date = \
                comment.modification_date.astimezone(timezone.utc)
    logger.info('Updated %i creation dates and %i modification dates' %
                (creations, modifieds))