// 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.

import Quickshell.Io
import QtQuick
import "../.."
import "Notes.js" as Notes

// A drawer tile and page for bash-notes. The store is notes.sh's own, under
// BASEDIR (default ~/.local/share/bash-notes): db.json is the index and
// notes/ holds one file per note, named by its creation time in epoch
// seconds. The page writes notes in exactly the shape notes.sh reads, so both
// tools work on the same notes.
//
// A Module is a plain QtObject and has no default property, so the Process and
// the FileView below are declared as typed properties, as UpdatesModule does
// for its Process.
Module {
    id: mod

    name: "notes"
    label: "Notes"
    alwaysActive: true

    // fa-sticky_note, present in Inconsolata Nerd Font.
    icon: "\uf249"

    // Resolved from notes.sh's own rc, so a changed BASEDIR moves the page
    // with it. Empty until the shell below returns.
    property string baseDir: ""
    property string dbPath: ""
    property string notesDir: ""
    property bool gitEnabled: false
    property string client: ""

    // The whole parsed db.json, so a write can replace .notes and carry
    // params and git through untouched.
    property var db: ({ notes: [] })
    property bool ready: false
    property string lastError: ""

    readonly property var notes: Notes.sorted(mod.db.notes)
    readonly property int count: Array.isArray(mod.db.notes) ? mod.db.notes.length : 0

    // One shell, sourcing the rc the way notes.sh sources it, so ${BASEDIR}
    // expands with ~ and notes.sh's own defaults apply when there is no rc.
    // Single-quoted JS strings: a template literal would interpolate ${...}.
    // Output is one field per line: base, db, notes dir, git on, client.
    property Process cfg: Process {
        running: true
        command: ["sh", "-c",
            '[ -r "$HOME/.config/bash-notes.rc" ] && . "$HOME/.config/bash-notes.rc"\n' +
            'base="${BASEDIR:-$HOME/.local/share/bash-notes}"\n' +
            'git=0; [ "${USEGIT:-false}" = "true" ] && [ -n "${GITREMOTE:-}" ] && git=1\n' +
            'printf "%s\\n" "$base" "${DB:-$base/db.json}" "${NOTESDIR:-$base/notes}" "$git" "${GITCLIENT:-$(hostname)}"']
        stdout: StdioCollector { onStreamFinished: mod.applyConfig(this.text) }
    }

    function applyConfig(text) {
        const l = String(text).split("\n");
        mod.baseDir = l[0] || "";
        mod.dbPath = l[1] || "";
        mod.notesDir = l[2] || "";
        mod.gitEnabled = (l[3] || "") === "1";
        mod.client = l[4] || "";
    }

    // The store, watched rather than read on open: the tile's count has to
    // move when a note is added from either side, the CLI included. A missing
    // file is an empty store, not an error worth logging.
    property FileView dbView: FileView {
        path: mod.dbPath
        atomicWrites: true
        watchChanges: true
        printErrors: false
        onFileChanged: mod.reparse()
        onLoaded: mod.reparse()
        onLoadFailed: mod.reparse()
    }

    // Nothing to read until the config has resolved, so the load failed on the
    // empty path does not mark the store ready.
    function reparse() {
        if (mod.dbPath === "") return;
        mod.db = Notes.parse(mod.dbView.text());
        mod.ready = true;
    }

    tileContent: Component {
        Text {
            width: parent ? parent.width : implicitWidth
            elide: Text.ElideRight
            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 4 }
            color: Theme.subtext
            text: !mod.ready ? "…"
                : mod.count === 0 ? "empty"
                : mod.count === 1 ? "1 note" : mod.count + " notes"
        }
    }

    page: Component {
        Page {
            id: pg
            title: "Notes"
            // 57 is the page header plus its rule, the reading ClipboardModule
            // takes of the same number.
            NotesPage {
                width: parent.width
                height: pg.height - 57
                owner: mod
            }
        }
    }
}