# sb-builder - Dashboard tab
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

"""Dashboard tab: tiles filled from sbb-remote stats and jobs."""

import time

from PyQt6.QtWidgets import (QGridLayout, QGroupBox, QHBoxLayout, QLabel,
                             QPushButton, QVBoxLayout, QWidget)

from .fmt import NA, describe, fmt_age, fmt_bytes, fmt_duration

TILES = ("VM", "Repo", "slackrepo", "Sync", "Jobs", "Orphans")


class Dashboard(QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.labels = {}
        grid = QGridLayout()
        for i, name in enumerate(TILES):
            box = QGroupBox(name)
            label = QLabel(NA)
            label.setWordWrap(True)
            QVBoxLayout(box).addWidget(label)
            grid.addWidget(box, i // 3, i % 3)
            self.labels[name] = label
        self.labels["Orphans"].setText("coming in phase 5")
        self.stale = QLabel()
        self.refresh_btn = QPushButton("Refresh")
        top = QHBoxLayout()
        top.addWidget(self.stale)
        top.addStretch()
        top.addWidget(self.refresh_btn)
        layout = QVBoxLayout(self)
        layout.addLayout(top)
        layout.addLayout(grid)
        layout.addStretch()

    def show_stats(self, s):
        L = self.labels
        load, disk = s.get("load"), s.get("disk_free") or {}
        L["VM"].setText(
            f"load: {NA if load is None else ' '.join(f'{x:.2f}' for x in load)}\n"
            f"uptime: {fmt_duration(s.get('uptime'))}\n"
            f"free: repo {fmt_bytes(disk.get('repo'))}, state {fmt_bytes(disk.get('state'))}")
        p = s.get("packages")
        L["Repo"].setText(NA if p is None else "\n".join(f"{k}: {v}" for k, v in p.items()))
        sr = s.get("slackrepo")
        if sr is None:
            L["slackrepo"].setText(NA)
        else:
            never = NA if p is None else p["total"] - sr["built"]
            L["slackrepo"].setText("\n".join(
                [f"built: {sr['built']}", f"never built: {never}",
                 *(f"{k}: {v}" for k, v in sorted(sr["results"].items()))]))
        sync = s.get("sync") or {}
        L["Sync"].setText("\n".join(f"{o}: {fmt_age(t)}" for o, t in sync.items()) or NA)

    def show_jobs(self, jobs):
        self.labels["Jobs"].setText("\n".join(describe(j) for j in jobs[:10]) or "no jobs yet")

    def set_stale(self, since):
        """Grey the tiles when the VM stopped answering; None clears it."""
        for label in self.labels.values():
            label.setEnabled(since is None)
        self.stale.setText("" if since is None else
                           f"stale since {time.strftime('%H:%M', time.localtime(since))}")