pragma ComponentBehavior: Bound

import Quickshell
import QtQuick
import QtQuick.Layouts
import ZShell.Config
import ZShell.Components
import qs.Components
import qs.Modules.Bar.Components
import qs.Modules.Bar.Popouts
import ZShell

SnapLayout {
	id: root

	required property bool fullscreen
	required property bool horizontal
	required property bool isHovered
	required property Wrapper popouts
	required property ClipWrapper popoutsWrapper
	required property ShellScreen screen
	required property ScreenState screenState
	readonly property int vPadding: 6

	function axisCenterOf(item: Item): real {
		const c = item.mapToItem(root, item.implicitWidth / 2, item.implicitHeight / 2);
		return horizontal ? ZUtils.snap(c.x, item) : ZUtils.snap(c.y, item);
	}

	function checkPopout(pos: real): void {
		const ch = (horizontal ? childAt(pos, height / 2) : childAt(width / 2, pos)) as EntryWrapper;
		const id = ch?.entryId;

		if (!ch || id === undefined) {
			if (!popouts.currentName.startsWith("traymenu") || Config.bar.tray.showOnHover)
				popouts.hasCurrent = false;
			return;
		}

		if (screenState.sidebar || screenState.dashboard || screenState.resources || screenState.settings)
			return;

		if (id === "statusIcons" && Config.bar.popouts.statusIcons) {
			const items = (ch.item as StatusIcons).items;
			const icon = horizontal ? items.childAt(mapToItem(items, pos, 0).x, items.height / 2) : items.childAt(items.width / 2, mapToItem(items, 0, pos).y);
			if (icon) {
				popouts.currentName = icon.name;
				popouts.currentCenter = Qt.binding(() => axisCenterOf(icon));
				popouts.hasCurrent = true;
			}
		} else if (id === "tray" && Config.bar.popouts.tray && Config.bar.tray.showOnHover) {
			const tray = ch.item as TrayIcons;
			const layout = tray.layout;
			const trayItem = horizontal ? layout.childAt(mapToItem(layout, pos, 0).x, layout.height / 2) : layout.childAt(tray.width / 2, mapToItem(layout, 0, pos).y);

			if (trayItem) {
				const idx = trayItem.index;
				popouts.currentName = `traymenu${idx}`;
				popouts.currentCenter = Qt.binding(() => axisCenterOf(trayItem));
				popouts.hasCurrent = true;
			}

			if (!popouts.currentName.startsWith("traymenu"))
				popouts.hasCurrent = false;
		}

		if (id === "updates") {
			popouts.currentName = "updates";
			popouts.currentCenter = Qt.binding(() => axisCenterOf(ch.item as Item));
			popouts.hasCurrent = true;
		}
	}

	function entryAt(pos: real): string {
		const ch = (horizontal ? childAt(pos, height / 2) : childAt(width / 2, pos)) as EntryWrapper;
		return ch?.entryId ?? "";
	}

	readonly property var sectionRects: {
		const count = repeater.count; // dependency: re-run when items are added/removed
		const names = ["start", "middle", "end"]; // constant ids by position
		const bounds = [null];
		let spacers = 0;

		for (let i = 0; i < count; i++) {
			const it = repeater.itemAt(i) as EntryWrapper;
			if (!it)
				continue;

			if (it.entryId === "spacer") {
				bounds.push(null);
				spacers++;
				continue;
			}

			const l = it.x, t = it.y, r = it.x + it.width, b = it.y + it.height;
			const cur = bounds[spacers];

			bounds[spacers] = cur ? {
				l: Math.min(cur.l, l),
				t: Math.min(cur.t, t),
				r: Math.max(cur.r, r),
				b: Math.max(cur.b, b)
			} : {
				l,
				t,
				r,
				b
			};
		}

		return bounds.map((c, n) => ({
					id: names[n] ?? `section${n}`,
					rect: c ? Qt.rect(c.l, c.t, c.r - c.l, c.b - c.t) : Qt.rect(0, 0, 0, 0)
				}));
	}

	spacing: Tokens.spacing.small
	orientation: horizontal ? Qt.Horizontal : Qt.Vertical

	Repeater {
		id: repeater

		model: ScriptModel {
			values: Config.bar.entries.values.filter(e => e.enabled)
		}

		DelegateChooser {
			role: "id"

			DelegateChoice {
				roleValue: "nightlight"

				delegate: EntryWrapper {
					NightlightWidget {
						horizontal: root.horizontal
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "spacer"

				delegate: EntryWrapper {
					Layout.fillHeight: !root.horizontal
					Layout.fillWidth: root.horizontal
				}
			}

			DelegateChoice {
				roleValue: "workspaces"

				delegate: EntryWrapper {
					Workspaces {
						horizontal: root.horizontal
						screen: root.screen
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "tray"

				delegate: EntryWrapper {
					TrayIcons {
						horizontal: root.horizontal
						loader: root
						popouts: root.popouts
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "statusIcons"

				delegate: EntryWrapper {
					StatusIcons {
						horizontal: root.horizontal
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "resources"

				delegate: EntryWrapper {
					Resources {
						horizontal: root.horizontal
						screenState: root.screenState
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "updates"

				delegate: EntryWrapper {
					UpdatesWidget {
						horizontal: root.horizontal
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "notifBell"

				delegate: EntryWrapper {
					NotifBell {
						horizontal: root.horizontal
						popouts: root.popouts
						screenState: root.screenState
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "clock"

				delegate: EntryWrapper {
					Clock {
						horizontal: root.horizontal
						loader: root
						popouts: root.popouts
						screenState: root.screenState
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "activeWindow"

				delegate: EntryWrapper {
					WindowTitle {
						bar: root
						horizontal: root.horizontal
						visible: !root.fullscreen || root.isHovered
					}
				}
			}

			DelegateChoice {
				roleValue: "network"

				delegate: EntryWrapper {
					NetworkWidget {}
				}
			}

			DelegateChoice {
				roleValue: "media"

				delegate: EntryWrapper {
					MediaWidget {
						horizontal: root.horizontal
						visible: !root.fullscreen || root.isHovered
					}
				}
			}
		}
	}

	component EntryWrapper: Item {
		readonly property int section: {
			let n = 0;
			for (let i = 0; i < index; i++) {
				if (repeater.model.values[i].id === "spacer")
					n++;
			}
			return n;
		}

		readonly property string entryId: modelData.id
		required property int index
		required property var modelData

		default property Item item

		Layout.alignment: root.horizontal ? Qt.AlignVCenter : Qt.AlignHCenter
		Layout.bottomMargin: !root.horizontal && index === repeater.count - 1 ? root.vPadding : 0
		Layout.leftMargin: root.horizontal && index === 0 ? root.vPadding : (entryId === "statusIcons" && root.horizontal) ? -root.spacing + Tokens.spacing.extraSmall : 0
		Layout.rightMargin: root.horizontal && index === repeater.count - 1 ? root.vPadding : 0
		Layout.topMargin: !root.horizontal && index === 0 ? root.vPadding : (entryId === "statusIcons" && !root.horizontal) ? -root.spacing + Tokens.spacing.extraSmall : 0
		children: item
		implicitHeight: item?.implicitHeight ?? 0
		implicitWidth: item?.implicitWidth ?? 0
	}
}