"""Constants for Jira offboarding ticket queries and regex patterns."""

import re
from dataclasses import dataclass


@dataclass(frozen=True)
class RegexPatterns:
    """Compiled regex patterns for text searching."""

    EMAIL_RE = re.compile(r'[\w.+%-]+@[\w][\w.-]*\.[A-Za-z]{2,}', re.UNICODE)

    # Shared fragments composed into the public patterns below. The spine
    # "request (has been|was) submitted" is common to both ticket types'
    # sentinels and to the full-name prefix.
    _SUBMITTED = r'request\s+(?:has been|was)\s+submitted'
    # Name prefix + capture, shared by both *_FULL_NAME_RE patterns. The
    # capture is non-greedy up to the first period and requires the name to end
    # in two letters, so a trailing middle initial ("John A. Doe.") isn't
    # truncated.
    _NAME_PREFIX = _SUBMITTED + r' for\s+'
    _NAME_CAPTURE = r'(.+?[^\W\d_]{2})\.'

    OFFBOARDING_FULL_NAME_RE = re.compile(
        _NAME_PREFIX + _NAME_CAPTURE,
        re.UNICODE,
    )
    OFFBOARDING_SENTINEL_RE = re.compile(
        r'offboarding ' + _SUBMITTED,
        re.IGNORECASE,
    )
    # Suspend tickets use the same "submitted for <name>." phrasing as
    # offboarding tickets (e.g. "...request has been submitted for John Doe.
    # Please ensure..."). Kept as a separate constant from
    # OFFBOARDING_FULL_NAME_RE to preserve the per-type registry symmetry and
    # leave room for future divergence.
    SUSPEND_FULL_NAME_RE = re.compile(
        _NAME_PREFIX + _NAME_CAPTURE,
        re.UNICODE,
    )
    # Suspend sentinel matches phrasings like "suspend network access request
    # has been submitted" without overlapping the offboarding sentinel.
    SUSPEND_SENTINEL_RE = re.compile(
        r'suspend\s+\w+\s+access\s+' + _SUBMITTED,
        re.IGNORECASE,
    )


@dataclass(frozen=True)
class JiraLabels:
    """Label strings applied to Jira offboarding tickets by the automation.

    Phase 1 labels (exclude from Phase 1 re-processing — JQL filters ``AND labels = empty``):
    - ``AUTOMATION_COMPLETE`` — all offboarding steps ran successfully.
    - ``NO_ACTIONS_REQUIRED`` — user not found in any system.
    - ``PENDING_APPROVAL`` — findings posted; awaiting human approval.
    - ``VALIDATION_FAILED`` — ticket source could not be verified.

    Phase 2 label (used to *include* tickets in Phase 2 — JQL filters ``AND labels = "approved-for-offboarding"``):
    - ``APPROVED_FOR_OFFBOARDING`` — a human has reviewed the findings and approved destructive actions.
    """

    AUTOMATION_COMPLETE = 'automation-complete'
    NO_ACTIONS_REQUIRED = 'no-actions-required'
    PENDING_APPROVAL = 'pending-approval'
    VALIDATION_FAILED = 'validation-failed'
    APPROVED_FOR_OFFBOARDING = 'approved-for-offboarding'

    # Suspension-flow equivalents. Kept separate from the offboarding labels so
    # the two flows never cross-trigger each other's Phase 2 JQL.
    SUSPENSION_COMPLETE = 'suspension-complete'
    SUSPEND_NO_ACTIONS_REQUIRED = 'suspend-no-actions-required'
    SUSPEND_PENDING_APPROVAL = 'suspend-pending-approval'
    SUSPEND_VALIDATION_FAILED = 'suspend-validation-failed'
    APPROVED_FOR_SUSPENSION = 'approved-for-suspension'


@dataclass(frozen=True)
class TicketValidation:
    """Constants for validating that offboarding tickets originate from the expected source."""

    REPORTER_ALLOWLIST = frozenset({'jira-email-reporter@sonymusic-pde.com'})
    FOOTER_SENTINEL = 'Created via e-mail received from'
    FOOTER_EMAIL = 'helpdesk.request@sonymusic.com'


@dataclass(frozen=True)
class JQLQueries:
    """JQL query strings for Jira offboarding tickets."""

    ALL_OFFBOARDING_TICKETS = """
        project = SYS
        AND textfields ~ "Global Technology Offboarding"
        AND labels = empty
        ORDER BY created DESC
    """

    MY_OFFBOARDING_TICKETS = """
        project = SYS
        AND status = "In Development"
        AND textfields ~ "Global Technology Offboarding"
        AND assignee = currentUser()
        AND labels = empty
        ORDER BY created DESC
    """

    NEW_OPEN_OFFBOARDING_TICKETS = """
        created >= -90d
        AND project = SYS
        AND status = Backlog
        AND textfields ~ "Global Technology Offboarding"
        AND labels = empty
        AND assignee IS EMPTY
        AND duedate IS EMPTY
        ORDER BY created DESC
    """

    APPROVED_OFFBOARDING_TICKETS = f"""
        project = SYS
        AND status = Backlog
        AND textfields ~ "Global Technology Offboarding"
        AND labels = "{JiraLabels.APPROVED_FOR_OFFBOARDING}"
        AND labels != "{JiraLabels.AUTOMATION_COMPLETE}"
        AND duedate < now()
        ORDER BY created DESC
    """

    NEW_OPEN_SUSPEND_TICKETS = """
        created >= -90d
        AND project = SYS
        AND status = Backlog
        AND textfields ~ "Global Technology Suspend Request"
        AND labels = empty
        AND assignee IS EMPTY
        AND duedate IS EMPTY
        ORDER BY created DESC
    """

    APPROVED_SUSPEND_TICKETS = f"""
        project = SYS
        AND status = Backlog
        AND textfields ~ "Global Technology Suspend Request"
        AND labels = "{JiraLabels.APPROVED_FOR_SUSPENSION}"
        AND labels != "{JiraLabels.SUSPENSION_COMPLETE}"
        AND duedate < now()
        ORDER BY created DESC
    """

    COMPLETED_TICKETS = f"""
        project = SYS
        AND (
            labels = "{JiraLabels.AUTOMATION_COMPLETE}"
            OR labels = "{JiraLabels.SUSPENSION_COMPLETE}"
            OR labels = "{JiraLabels.NO_ACTIONS_REQUIRED}"
            OR labels = "{JiraLabels.SUSPEND_NO_ACTIONS_REQUIRED}"
        )
        AND status != "Closed"
        ORDER BY created DESC
    """