"""Application tracking models."""

from datetime import datetime, timezone

from shopdb.extensions import db
from .base import BaseModel


def _utcnow():
    # naive UTC to match the other DB DateTime columns (stored without tzinfo)
    return datetime.now(timezone.utc).replace(tzinfo=None)
# SupportTeam / SupportTeamContact live in supportteam.py; imported by the
# models package so the Application.supportteam relationship resolves.


class Application(BaseModel):
    """Application catalog."""
    __tablename__ = 'applications'

    appid = db.Column(db.Integer, primary_key=True)
    appname = db.Column(db.String(100), unique=True, nullable=False)
    appdescription = db.Column(db.String(255))
    supportteamid = db.Column(db.Integer, db.ForeignKey('supportteams.supportteamid'))
    isinstallable = db.Column(db.Boolean, default=False)
    applicationnotes = db.Column(db.Text)
    installpath = db.Column(db.String(255))
    applicationlink = db.Column(db.String(512))
    documentationpath = db.Column(db.String(512))
    ishidden = db.Column(db.Boolean, default=False)
    isprinter = db.Column(db.Boolean, default=False)
    islicenced = db.Column(db.Boolean, default=False)
    isrequired = db.Column(
        db.Boolean, default=False,
        comment='Required on all PCs (drives the software-compliance report)'
    )
    image = db.Column(db.String(255))
    # Digest of the app-level uploaded installer (installpath). Lets the
    # endpoint update_app push resolve an install source by app alone, with no
    # AppVersion row: the agent fetches the pinned bytes and verifies this hash.
    # Stamped on package upload; null when installpath is a site share path.
    installersha256 = db.Column(db.String(64))

    # Relationships
    supportteam = db.relationship('SupportTeam', back_populates='applications')
    versions = db.relationship('AppVersion', back_populates='application', lazy='dynamic')

    def to_dict(self):
        """Serialize, flattening the support team + its active contacts.

        Emits supportteamname, teamurl, and the team's active contacts so the
        frontend needs a single call to render the Support card.
        """
        result = super().to_dict()
        team = self.supportteam
        result['supportteamname'] = team.teamname if team else None
        result['teamurl'] = team.teamurl if team else None
        result['contacts'] = [
            {'name': c.name, 'sso': c.sso}
            for c in team.active_contacts()
        ] if team else []
        return result

    def __repr__(self):
        return f"<Application {self.appname}>"


class AppVersion(db.Model):
    """Application version tracking."""
    __tablename__ = 'appversions'

    appversionid = db.Column(db.Integer, primary_key=True)
    appid = db.Column(db.Integer, db.ForeignKey('applications.appid'), nullable=False)
    version = db.Column(db.String(50), nullable=False)
    releasedate = db.Column(db.Date)
    notes = db.Column(db.String(255))
    dateadded = db.Column(db.DateTime, default=_utcnow)
    isactive = db.Column(db.Boolean, default=True)
    # Delivery metadata for the endpoint installer push. sha256 pins the exact
    # bytes the agent must fetch (warn-not-block for now; hardened later);
    # silentargs carries this version's unattended-install switches because
    # homegrown EXEs vary by developer (MSI is uniform via msiexec).
    sha256 = db.Column(db.String(64))
    silentargs = db.Column(db.String(255))

    # Relationships
    application = db.relationship('Application', back_populates='versions')

    # Unique constraint on app + version
    __table_args__ = (
        db.UniqueConstraint('appid', 'version', name='uq_app_version'),
    )

    def to_dict(self):
        """Convert to dictionary."""
        return {
            'appversionid': self.appversionid,
            'appid': self.appid,
            'version': self.version,
            'releasedate': self.releasedate.isoformat() if self.releasedate else None,
            'notes': self.notes,
            'dateadded': self.dateadded.isoformat() + 'Z' if self.dateadded else None,
            'isactive': self.isactive,
            'sha256': self.sha256,
            'silentargs': self.silentargs
        }

    def __repr__(self):
        return f"<AppVersion {self.application.appname if self.application else self.appid} v{self.version}>"