warchron_app/src/warchron/view/view.py

from pathlib import Path
import calendar

from PyQt6 import QtWidgets
from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QDialog, QFileDialog, QTreeWidgetItem, QMenu
from PyQt6.QtGui import QCloseEvent

from warchron.constants import ROLE_TYPE, ROLE_ID, ItemType
from warchron.view.ui.ui_main_window import Ui_MainWindow
from warchron.view.ui.ui_player_dialog import Ui_playerDialog
from warchron.view.ui.ui_war_dialog import Ui_warDialog
from warchron.view.ui.ui_campaign_dialog import Ui_campaignDialog
from warchron.view.ui.ui_objective_dialog import Ui_objectiveDialog
from warchron.view.ui.ui_participant_dialog import Ui_participantDialog

class View(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(View, self).__init__(parent)
        self.setupUi(self)
        self.on_close_callback = None
        self.on_selection_changed = None
        self.on_add_campaign = None
        self.on_add_round = None
        self.on_edit_item = None
        self.on_delete_item = None
        self.show_details(None)
        self.playersTable.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.playersTable.customContextMenuRequested.connect(self._on_players_table_context_menu)
        self.warParticipantsTable.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.warParticipantsTable.customContextMenuRequested.connect(self._on_war_participants_table_context_menu)
        self.objectivesTable.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.objectivesTable.customContextMenuRequested.connect(self._on_objectives_table_context_menu)
        self.warsTree.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self.warsTree.customContextMenuRequested.connect(self._on_wars_tree_context_menu)
        self.addCampaignBtn.clicked.connect(self._on_add_campaign_clicked)
        self.addRoundBtn.clicked.connect(self._on_add_round_clicked)

    def _emit_selection_changed(self, current, previous):
        if not self.on_tree_selection_changed:
            return
        if not current:
            self.on_tree_selection_changed(None)
            return
        self.on_tree_selection_changed({
            "type": current.data(0, ROLE_TYPE),
            "id": current.data(0, ROLE_ID),
        })

    def get_current_tab(self) -> str:
        index = self.tabWidget.currentIndex()
        if index == 0:
            return "players"
        elif index == 1:
            return "wars"
        return ""

# General popups

    def closeEvent(self, event: QCloseEvent):
        if self.on_close_callback:
            proceed = self.on_close_callback()
            if not proceed:
                event.ignore()
                return
        event.accept()

    def ask_open_file(self) -> Path | None:
        filename, _ = QFileDialog.getOpenFileName(
            self,
            "Open war history",
            "",
            "WarChron files (*.json)"
        )
        return Path(filename) if filename else None

    def ask_save_file(self) -> Path | None:
        filename, _ = QFileDialog.getSaveFileName(
            self,
            "Save war history",
            "",
            "WarChron files (*.json)"
        )
        return Path(filename) if filename else None

# Players view

    def _on_players_table_context_menu(self, pos):
        item = self.playersTable.itemAt(pos)
        if not item:
            return
        row = item.row()
        name_item = self.playersTable.item(row, 0)
        if not name_item:
            return
        player_id = name_item.data(Qt.ItemDataRole.UserRole)
        menu = QMenu(self)
        edit_action = menu.addAction("Edit")
        delete_action = menu.addAction("Delete")
        action = menu.exec(self.playersTable.viewport().mapToGlobal(pos))
        if action == edit_action and self.on_edit_item:
            self.on_edit_item(ItemType.PLAYER, player_id)
        elif action == delete_action and self.on_delete_item:
            self.on_delete_item(ItemType.PLAYER, player_id)

    def display_players(self, players: list):
        table = self.playersTable
        table.setRowCount(len(players))
        for row, player in enumerate(players):
            play_item = QtWidgets.QTableWidgetItem(player.name)
            play_item.setData(Qt.ItemDataRole.UserRole, player.id)
            table.setItem(row, 0, play_item)
        table.resizeColumnsToContents()

# Wars view

    def _on_add_campaign_clicked(self):
        if self.on_add_campaign:
            self.on_add_campaign()

    def _on_add_round_clicked(self):
        if self.on_add_round:
            self.on_add_round()

    def set_add_campaign_enabled(self, enabled: bool):
        self.addCampaignBtn.setEnabled(enabled)

    def set_add_round_enabled(self, enabled: bool):
        self.addRoundBtn.setEnabled(enabled)

    def _on_wars_tree_context_menu(self, pos):
        item = self.warsTree.itemAt(pos)
        if not item:
            return
        item_type = item.data(0, ROLE_TYPE)
        item_id = item.data(0, ROLE_ID)
        menu = QMenu(self)
        edit_action = None
        if item_type != ItemType.ROUND:
            edit_action = menu.addAction("Edit")
        delete_action = menu.addAction("Delete")
        action = menu.exec(self.warsTree.viewport().mapToGlobal(pos))
        if action == edit_action:
            if self.on_edit_item:
                self.on_edit_item(item_type, item_id)
        elif action == delete_action:
            if self.on_delete_item:
                self.on_delete_item(item_type, item_id)

    def _format_war_label(self, war) -> str:
        return f"{war.name} ({war.year})"

    def _format_campaign_label(self, camp) -> str:
        return f"{camp.name} ({calendar.month_name[camp.month]})"

    def _format_round_label(self, round, index: int) -> str:
        return f"Round {index}"

    def display_wars_tree(self, wars: list):
        tree = self.warsTree
        tree.clear()
        tree.setColumnCount(1)
        tree.setHeaderLabels(["Wars"])
        for war in wars:
            war_item = QTreeWidgetItem([self._format_war_label(war)])
            war_item.setData(0, ROLE_TYPE, ItemType.WAR)
            war_item.setData(0, ROLE_ID, war.id)
            tree.addTopLevelItem(war_item)
            for camp in war.get_all_campaigns():
                camp_item = QTreeWidgetItem([self._format_campaign_label(camp)])
                camp_item.setData(0, ROLE_TYPE, ItemType.CAMPAIGN)
                camp_item.setData(0, ROLE_ID, camp.id)
                war_item.addChild(camp_item)
                for index, rnd in enumerate(camp.get_all_rounds(), start=1):
                    rnd_item = QTreeWidgetItem([self._format_round_label(rnd, index)])
                    rnd_item.setData(0, ROLE_TYPE, ItemType.ROUND)
                    rnd_item.setData(0, ROLE_ID, rnd.id)
                    camp_item.addChild(rnd_item)
        tree.currentItemChanged.connect(self._emit_selection_changed)
        tree.expandAll()

    def select_tree_item(self, *, item_type: ItemType, item_id: str):
        def walk(item: QTreeWidgetItem):
            if (
                item.data(0, ROLE_TYPE) == item_type
                and item.data(0, ROLE_ID) == item_id
            ):
                self.warsTree.setCurrentItem(item)
                return True
            for i in range(item.childCount()):
                if walk(item.child(i)):
                    return True
            return False
        for i in range(self.warsTree.topLevelItemCount()):
            if walk(self.warsTree.topLevelItem(i)):
                return

    def get_selected_tree_item(self):
        item = self.warsTree.currentItem()
        if not item:
            return None
        return {
            "type": item.data(0, ROLE_TYPE),
            "id": item.data(0, ROLE_ID)
        }

    def show_details(self, item_type: str | None):
        if item_type == ItemType.WAR:
            self.selectedDetailsStack.setCurrentWidget(self.pageWar)
        elif item_type == ItemType.CAMPAIGN:
            self.selectedDetailsStack.setCurrentWidget(self.pageCampaign)
        elif item_type == ItemType.ROUND:
            self.selectedDetailsStack.setCurrentWidget(self.pageRound)
        else:
            self.selectedDetailsStack.setCurrentWidget(self.pageEmpty)

# War page

    def _on_objectives_table_context_menu(self, pos):
        item = self.objectivesTable.itemAt(pos)
        if not item:
            return
        row = item.row()
        name_item = self.objectivesTable.item(row, 0)
        if not name_item:
            return
        objective_id = name_item.data(Qt.ItemDataRole.UserRole)
        menu = QMenu(self)
        edit_action = menu.addAction("Edit")
        delete_action = menu.addAction("Delete")
        action = menu.exec(self.objectivesTable.viewport().mapToGlobal(pos))
        if action == edit_action and self.on_edit_item:
            self.on_edit_item(ItemType.OBJECTIVE, objective_id)
        elif action == delete_action and self.on_delete_item:
            self.on_delete_item(ItemType.OBJECTIVE, objective_id)

    def _on_war_participants_table_context_menu(self, pos):
        item = self.warParticipantsTable.itemAt(pos)
        if not item:
            return
        row = item.row()
        name_item = self.warParticipantsTable.item(row, 0)
        if not name_item:
            return
        participant_id = name_item.data(Qt.ItemDataRole.UserRole)
        menu = QMenu(self)
        edit_action = menu.addAction("Edit")
        delete_action = menu.addAction("Delete")
        action = menu.exec(self.warParticipantsTable.viewport().mapToGlobal(pos))
        if action == edit_action and self.on_edit_item:
            self.on_edit_item(ItemType.WAR_PARTICIPANT, participant_id)
        elif action == delete_action and self.on_delete_item:
            self.on_delete_item(ItemType.WAR_PARTICIPANT, participant_id)

    def show_war_details(self, *, name: str, year: int):
        self.warName.setText(name)
        self.warYear.setText(str(year))

    def display_war_objectives(self, objectives: list):
        table = self.objectivesTable
        table.clearContents()
        table.setRowCount(len(objectives))
        for row, obj in enumerate(objectives):
            name_item = QtWidgets.QTableWidgetItem(obj.name)
            desc_item = QtWidgets.QTableWidgetItem(obj.description)
            name_item.setData(Qt.ItemDataRole.UserRole, obj.id)
            table.setItem(row, 0, name_item)
            table.setItem(row, 1, desc_item)
        table.resizeColumnsToContents()

    def display_war_participants(self, participants: list[tuple[str, str, str]]):
        table = self.warParticipantsTable
        table.clearContents()
        table.setRowCount(len(participants))
        for row, (name, faction, pid) in enumerate(participants):
            name_item = QtWidgets.QTableWidgetItem(name)
            fact_item = QtWidgets.QTableWidgetItem(faction)
            name_item.setData(Qt.ItemDataRole.UserRole, pid)
            table.setItem(row, 0, name_item)
            table.setItem(row, 1, fact_item)
        table.resizeColumnsToContents()

# Campaign page

    def show_campaign_details(self, *, name: str, month: int):
        self.campaignName.setText(name)
        self.campaignMonth.setText(calendar.month_name[month])

# Round page

    def show_round_details(self, *, index: int):
        self.roundNb.setText(f"Round {index}")

     
class PlayerDialog(QDialog):
    def __init__(self, parent=None, *, default_name: str = ""):
        super().__init__(parent)
        self.ui = Ui_playerDialog()
        self.ui.setupUi(self)
        self.ui.playerName.setText(default_name)

    def get_player_name(self) -> str:
        return self.ui.playerName.text().strip()

class WarDialog(QDialog):
    def __init__(self, parent=None, default_name: str = "", default_year: int | None = None):
        super().__init__(parent)
        self.ui = Ui_warDialog()
        self.ui.setupUi(self)
        self.ui.warName.setText(default_name)
        if default_year is not None:
            self.ui.warYear.setValue(default_year)

    def get_war_name(self) -> str:
        return self.ui.warName.text().strip()
    
    def get_war_year(self) -> int:
        return int(self.ui.warYear.value())

class CampaignDialog(QDialog):
    def __init__(self, parent=None, default_name: str = "", default_month: int | None = None):
        super().__init__(parent)
        self.ui = Ui_campaignDialog()
        self.ui.setupUi(self)
        self.ui.campaignName.setText(default_name)
        if default_month is not None:
            self.ui.campaignMonth.setValue(default_month)

    def get_campaign_name(self) -> str:
        return self.ui.campaignName.text().strip()

    def get_campaign_month(self) -> int:
        return int(self.ui.campaignMonth.value())
    
class ObjectiveDialog(QDialog):
    def __init__(self, parent=None, *, default_name="", default_description=""):
        super().__init__(parent)
        self.ui = Ui_objectiveDialog()
        self.ui.setupUi(self)
        self.ui.objectiveName.setText(default_name)
        self.ui.objectiveDescription.setPlainText(default_description)

    def get_objective_name(self) -> str:
        return self.ui.objectiveName.text().strip()

    def get_objective_description(self) -> str:
        return self.ui.objectiveDescription.toPlainText().strip()
    
class ParticipantDialog(QDialog):
    def __init__(self, parent=None, *, players: list, default_player_id=None, default_faction="", editable_player=True):
        super().__init__(parent)
        self.ui = Ui_participantDialog()
        self.ui.setupUi(self)
        for player in players:
            self.ui.playerComboBox.addItem(player.name, player.id)
        if default_player_id:
            index = self.ui.playerComboBox.findData(default_player_id)
            if index != -1:
                self.ui.playerComboBox.setCurrentIndex(index)
        self.ui.playerComboBox.setEnabled(editable_player)
        self.ui.faction.setText(default_faction)

    def get_player_id(self) -> str:
        return self.ui.playerComboBox.currentData()

    def get_participant_faction(self) -> str:
        return self.ui.faction.text().strip()