package seasonsview

import "git.haelnorr.com/h/oslstats/internal/db"
import "git.haelnorr.com/h/oslstats/internal/permissions"
import "git.haelnorr.com/h/oslstats/internal/contexts"
import "git.haelnorr.com/h/oslstats/internal/view/baseview"
import "fmt"

templ SeasonLeagueTeamDetailPage(twr *db.TeamWithRoster, fixtures []*db.Fixture, available []*db.Player, scheduleMap map[int]*db.FixtureSchedule) {
	{{
		team := twr.Team
		season := twr.Season
		league := twr.League
	}}
	@baseview.Layout(fmt.Sprintf("%s - %s - %s", team.Name, league.Name, season.Name)) {
		<div class="max-w-screen-2xl mx-auto px-4 py-8">
			<div class="bg-mantle border border-surface1 rounded-lg overflow-hidden">
				<!-- Header Section -->
				<div class="bg-surface0 border-b border-surface1 px-6 py-8">
					<div class="flex flex-col sm:flex-row justify-between items-start sm:items-center gap-4">
						<div class="flex items-center gap-4">
							if team.Color != "" {
								<div
									class="w-12 h-12 rounded-full border-2 border-surface1 shrink-0"
									style={ "background-color: " + templ.SafeCSS(team.Color) }
								></div>
							}
							<div>
								<h1 class="text-4xl font-bold text-text">{ team.Name }</h1>
								<div class="flex items-center gap-2 mt-2 flex-wrap">
									<span class="px-2 py-1 bg-mantle rounded text-subtext0 font-mono text-sm">
										{ team.ShortName }
									</span>
									<span class="px-2 py-1 bg-mantle rounded text-subtext0 font-mono text-sm">
										{ team.AltShortName }
									</span>
									<span class="text-subtext1 text-sm">
										{ season.Name } — { league.Name }
									</span>
								</div>
							</div>
						</div>
						<a
							href={ templ.SafeURL(fmt.Sprintf("/seasons/%s/leagues/%s/teams", season.ShortName, league.ShortName)) }
							class="rounded-lg px-4 py-2 hover:cursor-pointer text-center
								bg-surface1 hover:bg-surface2 text-text transition"
						>
							Back to Teams
						</a>
					</div>
				</div>
				<!-- Content -->
				<div class="bg-crust p-6">
					<!-- Top row: Roster (left) + Fixtures (right) -->
					<div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
						@TeamRosterSection(twr, available)
						@teamFixturesPane(twr.Team, fixtures, scheduleMap)
					</div>
					<!-- Stats below both -->
					<div class="mt-6">
						@teamStatsSection()
					</div>
				</div>
			</div>
		</div>
		<script src="/static/vendored/sortablejs@1.15.6.min.js"></script>
	}
}

// TeamRosterSection renders the roster section — exported so it can be used for HTMX swaps
templ TeamRosterSection(twr *db.TeamWithRoster, available []*db.Player) {
	{{
		permCache := contexts.Permissions(ctx)
		canManagePlayers := permCache.HasPermission(permissions.TeamsManagePlayers)

		// Build the non-manager player list for display
		rosterPlayers := []*db.Player{}
		for _, p := range twr.Players {
			if p != nil && (twr.Manager == nil || p.ID != twr.Manager.ID) {
				rosterPlayers = append(rosterPlayers, p)
			}
		}
		hasRoster := twr.Manager != nil || len(rosterPlayers) > 0
	}}
	<section
		id="team-roster-section"
		x-data="{ showManageRosterModal: false }"
	>
		<div class="flex justify-between items-center mb-4">
			<h2 class="text-2xl font-bold text-text">Roster</h2>
			if canManagePlayers {
				<button
					@click="showManageRosterModal = true"
					class="rounded-lg px-4 py-2 hover:cursor-pointer text-center text-sm
						bg-blue hover:bg-blue/80 text-mantle transition"
				>
					Manage Players
				</button>
			}
		</div>
		if !hasRoster {
			<div class="bg-surface0 border border-surface1 rounded-lg p-8 text-center">
				<p class="text-subtext0 text-lg">No players on this roster yet.</p>
				if canManagePlayers {
					<p class="text-subtext1 text-sm mt-2">Click "Manage Players" to add players to this team.</p>
				}
			</div>
		} else {
			<div class="bg-surface0 border border-surface1 rounded-lg overflow-hidden divide-y divide-surface1">
				if twr.Manager != nil {
					<div class="px-4 py-3 flex items-center justify-between">
						<span class="text-text font-medium">{ twr.Manager.Name }</span>
						<span class="text-xs px-2 py-0.5 bg-yellow/20 text-yellow rounded font-medium">
							&#9733; Manager
						</span>
					</div>
				}
				for _, player := range rosterPlayers {
					<div class="px-4 py-3">
						<span class="text-text">{ player.Name }</span>
					</div>
				}
			</div>
		}
		if canManagePlayers {
			@manageRosterModal(twr, available, rosterPlayers)
		}
	</section>
}

templ manageRosterModal(twr *db.TeamWithRoster, available []*db.Player, rosterPlayers []*db.Player) {
	<div
		x-show="showManageRosterModal"
		@keydown.escape.window="showManageRosterModal = false"
		class="fixed inset-0 z-50 overflow-y-auto"
		style="display: none;"
		x-data="rosterManager()"
		x-init="$watch('showManageRosterModal', val => { if (val) $nextTick(() => init()) })"
	>
		<!-- Backdrop -->
		<div
			class="fixed inset-0 bg-crust/80 transition-opacity"
			@click="showManageRosterModal = false"
		></div>
		<!-- Modal -->
		<div class="flex min-h-full items-center justify-center p-4">
			<div
				class="relative bg-mantle border-2 border-surface1 rounded-xl shadow-xl max-w-4xl w-full p-6"
				@click.stop
			>
				<div class="flex justify-between items-center mb-6">
					<h3 class="text-2xl font-bold text-text">Manage Players</h3>
					<button
						@click="showManageRosterModal = false"
						class="text-subtext0 hover:text-text transition hover:cursor-pointer"
					>
						<svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
							<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
						</svg>
					</button>
				</div>
				<!-- Two column layout -->
				<div class="grid grid-cols-1 md:grid-cols-2 gap-6">
					<!-- Left: Available Players -->
					<div>
						<h4 class="text-lg font-semibold text-text mb-3">Available Players</h4>
						<input
							type="text"
							x-model="search"
							@input="applySearch()"
							placeholder="Search players..."
							class="w-full px-3 py-2 bg-base border border-surface1 rounded-lg text-text
								focus:border-blue focus:outline-none mb-3 text-sm"
						/>
						<div
							id="available-players-list"
							class="bg-base border border-surface1 rounded-lg p-2 min-h-48 max-h-80 overflow-y-auto space-y-1"
						>
							for _, player := range available {
								<div
									class="roster-player-chip px-3 py-2 bg-surface0 border border-surface1 rounded
										text-text text-sm cursor-grab hover:bg-surface1 transition"
									data-id={ fmt.Sprint(player.ID) }
									data-name={ player.Name }
								>
									{ player.Name }
								</div>
							}
						</div>
						<p class="text-subtext1 text-xs mt-2">Drag players to the team roster</p>
					</div>
					<!-- Right: Team Roster -->
					<div>
						<h4 class="text-lg font-semibold text-text mb-3">Team Roster</h4>
						<!-- Manager slot -->
						<div class="mb-4">
							<label class="text-sm font-medium text-yellow mb-2 flex items-center gap-1">
								&#9733; Manager
							</label>
							<div
								id="manager-drop-zone"
								class="bg-base border-2 border-dashed border-yellow/40 rounded-lg p-2 min-h-12
									flex items-center justify-center"
							>
								if twr.Manager != nil {
									<div
										class="roster-player-chip px-3 py-2 bg-yellow/10 border border-yellow/30 rounded
											text-text text-sm cursor-grab w-full"
										data-id={ fmt.Sprint(twr.Manager.ID) }
										data-name={ twr.Manager.Name }
									>
										{ twr.Manager.Name }
									</div>
								}
							</div>
						</div>
						<!-- Players list -->
						<div>
							<label class="text-sm font-medium text-subtext0 mb-2 block">Players</label>
							<div
								id="roster-drop-zone"
								class="bg-base border-2 border-dashed border-surface1 rounded-lg p-2 min-h-40
									max-h-60 overflow-y-auto space-y-1"
							>
								for _, player := range rosterPlayers {
									<div
										class="roster-player-chip px-3 py-2 bg-surface0 border border-surface1 rounded
											text-text text-sm cursor-grab hover:bg-surface1 transition"
										data-id={ fmt.Sprint(player.ID) }
										data-name={ player.Name }
									>
										{ player.Name }
									</div>
								}
							</div>
						</div>
					</div>
				</div>
				<!-- Footer -->
				<div class="flex justify-between items-center mt-6 pt-4 border-t border-surface1">
					<p
						x-show="!hasManager"
						class="text-sm text-red"
					>
						A manager is required
					</p>
					<div class="flex gap-3 ml-auto">
						<button
							type="button"
							@click="showManageRosterModal = false"
							class="px-4 py-2 rounded-lg bg-surface0 hover:bg-surface1 text-text transition hover:cursor-pointer"
						>
							Cancel
						</button>
						<form
							id="roster-submit-form"
							hx-post="/teams/manage_roster"
							hx-swap="none"
							class="inline"
						>
							<input type="hidden" name="season_id" value={ fmt.Sprint(twr.Season.ID) }/>
							<input type="hidden" name="league_id" value={ fmt.Sprint(twr.League.ID) }/>
							<input type="hidden" name="team_id" value={ fmt.Sprint(twr.Team.ID) }/>
							<input type="hidden" name="manager_id" value="0"/>
							<!-- player_ids inputs are added dynamically by submitRoster() -->
							<button
								type="button"
								@click="submitRoster()"
								:disabled="!hasManager"
								class="px-4 py-2 rounded-lg text-mantle transition"
								:class="hasManager ? 'bg-green hover:bg-green/75 hover:cursor-pointer' : 'bg-green/40 cursor-not-allowed'"
							>
								Save Roster
							</button>
						</form>
					</div>
				</div>
			</div>
		</div>
	</div>
	<script>
		function rosterManager() {
			return {
				search: '',
				hasManager: false,
				sortableInstances: [],
				updateHasManager() {
					const zone = document.getElementById('manager-drop-zone');
					this.hasManager = zone ? zone.querySelectorAll('.roster-player-chip').length > 0 : false;
				},
				init() {
					if (typeof Sortable === 'undefined') return;

					// Destroy any previous instances
					this.sortableInstances.forEach(s => s.destroy());
					this.sortableInstances = [];

					const self = this;

					this.sortableInstances.push(new Sortable(
						document.getElementById('available-players-list'), {
						group: { name: 'roster', pull: true, put: true },
						sort: false,
						animation: 150,
						onAdd(evt) { self.applySearch(); self.updateHasManager(); },
						onRemove(evt) { self.applySearch(); self.updateHasManager(); }
					}));

					this.sortableInstances.push(new Sortable(
						document.getElementById('manager-drop-zone'), {
						group: { name: 'roster', pull: true, put: function(to) {
							return to.el.querySelectorAll('.roster-player-chip').length === 0;
						}},
						sort: false,
						animation: 150,
						onAdd(evt) {
							// Style the chip for manager zone
							evt.item.classList.remove('bg-surface0', 'border-surface1');
							evt.item.classList.add('bg-yellow/10', 'border-yellow/30', 'w-full');
							self.updateHasManager();
						},
						onRemove(evt) {
							// Revert style
							evt.item.classList.add('bg-surface0', 'border-surface1');
							evt.item.classList.remove('bg-yellow/10', 'border-yellow/30', 'w-full');
							self.updateHasManager();
						}
					}));

					this.sortableInstances.push(new Sortable(
						document.getElementById('roster-drop-zone'), {
						group: { name: 'roster', pull: true, put: true },
						sort: true,
						animation: 150,
						onAdd(evt) {
							// Ensure surface styling
							evt.item.classList.add('bg-surface0', 'border-surface1');
							evt.item.classList.remove('bg-yellow/10', 'border-yellow/30', 'w-full');
						}
					}));

					this.updateHasManager();
					this.applySearch();
				},
				applySearch() {
					const s = this.search.toLowerCase();
					const list = document.getElementById('available-players-list');
					if (!list) return;
					const chips = list.querySelectorAll('.roster-player-chip');
					chips.forEach(chip => {
						const name = (chip.dataset.name || '').toLowerCase();
						if (s === '' || name.includes(s)) {
							chip.style.display = '';
						} else {
							chip.style.display = 'none';
						}
					});
				},
				submitRoster() {
					if (!this.hasManager) return;

					const managerZone = document.getElementById('manager-drop-zone');
					const rosterZone = document.getElementById('roster-drop-zone');

					const managerChip = managerZone ? managerZone.querySelector('.roster-player-chip') : null;
					const managerID = managerChip ? managerChip.dataset.id : '0';

					const rosterChips = rosterZone ? rosterZone.querySelectorAll('.roster-player-chip') : [];
					const playerIDs = Array.from(rosterChips).map(el => el.dataset.id);

					// Build a hidden form dynamically and submit via HTMX
					const form = document.getElementById('roster-submit-form');
					// Clear previous dynamic inputs
					form.querySelectorAll('.dynamic-input').forEach(el => el.remove());

					// Set manager ID
					form.querySelector('[name="manager_id"]').value = managerID;

					// Add player_ids as multiple hidden inputs
					playerIDs.forEach(id => {
						const input = document.createElement('input');
						input.type = 'hidden';
						input.name = 'player_ids';
						input.value = id;
						input.className = 'dynamic-input';
						form.appendChild(input);
					});

					// Trigger HTMX request on the form
					htmx.trigger(form, 'submit');
				}
			}
		}
	</script>
}

templ teamFixturesPane(team *db.Team, fixtures []*db.Fixture, scheduleMap map[int]*db.FixtureSchedule) {
	<section class="space-y-6">
		<!-- Upcoming -->
		<div>
			<h2 class="text-2xl font-bold text-text mb-4">Upcoming</h2>
			if len(fixtures) == 0 {
				<div class="bg-surface0 border border-surface1 rounded-lg p-8 text-center">
					<p class="text-subtext0 text-lg">No upcoming fixtures.</p>
				</div>
			} else {
				<div class="bg-surface0 border border-surface1 rounded-lg overflow-hidden divide-y divide-surface1">
					for _, fixture := range fixtures {
						@teamFixtureRow(team, fixture, scheduleMap)
					}
				</div>
			}
		</div>
		<!-- Results -->
		<div>
			<h2 class="text-2xl font-bold text-text mb-4">Results</h2>
			<div class="bg-surface0 border border-surface1 rounded-lg p-8 text-center">
				<p class="text-subtext0 text-lg">Results coming soon.</p>
				<p class="text-subtext1 text-sm mt-2">Match results will appear here once game data is recorded.</p>
			</div>
		</div>
	</section>
}

templ teamFixtureRow(team *db.Team, fixture *db.Fixture, scheduleMap map[int]*db.FixtureSchedule) {
	{{
		isHome := fixture.HomeTeamID == team.ID
		var opponent string
		if isHome {
			opponent = fixture.AwayTeam.Name
		} else {
			opponent = fixture.HomeTeam.Name
		}
		sched, hasSchedule := scheduleMap[fixture.ID]
		_ = sched
	}}
	<a
		href={ templ.SafeURL(fmt.Sprintf("/fixtures/%d", fixture.ID)) }
		class="px-4 py-3 flex items-center justify-between gap-3 hover:bg-surface1 transition hover:cursor-pointer block"
	>
		<div class="flex items-center gap-3 min-w-0">
			<span class="text-xs font-mono text-subtext0 bg-mantle px-2 py-0.5 rounded shrink-0">
				GW{ fmt.Sprint(*fixture.GameWeek) }
			</span>
			if isHome {
				<span class="text-xs px-2 py-0.5 bg-blue/20 text-blue rounded font-medium shrink-0">
					HOME
				</span>
			} else {
				<span class="text-xs px-2 py-0.5 bg-surface1 text-subtext0 rounded font-medium shrink-0">
					AWAY
				</span>
			}
			<span class="text-sm text-subtext0 shrink-0">vs</span>
			<span class="text-text font-medium truncate">
				{ opponent }
			</span>
		</div>
		if hasSchedule && sched.ScheduledTime != nil {
			<span class="text-xs text-green font-medium shrink-0">
				@localtime(sched.ScheduledTime, "short")
			</span>
		} else {
			<span class="text-xs text-subtext1 shrink-0">
				TBD
			</span>
		}
	</a>
}

templ teamStatsSection() {
	<section>
		<div class="mb-4">
			<h2 class="text-2xl font-bold text-text">Stats</h2>
		</div>
		<div class="bg-surface0 border border-surface1 rounded-lg p-8 text-center">
			<p class="text-subtext0 text-lg">Stats coming soon.</p>
			<p class="text-subtext1 text-sm mt-2">Team statistics will appear here once game data is available.</p>
		</div>
	</section>
}