package adminview

import (
	"fmt"
	"git.haelnorr.com/h/oslstats/internal/db"
	"time"
)

templ AuditLogsList(logs *db.List[db.AuditLog], users []*db.User, actions []string, resourceTypes []string) {
	<div class="space-y-4">
		<!-- Header -->
		<div class="flex justify-between items-center mb-6 px-4">
			<h1 class="text-2xl font-bold text-text">Audit Logs</h1>
		</div>
		<!-- Filters -->
		<div class="bg-surface0 border border-surface1 rounded-lg p-4 mb-6">
			<form
				id="audit-filters-form"
				hx-post="/admin/audit/filter"
				hx-target="#audit-results-container"
				hx-trigger="submit"
				class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4"
			>
				<!-- User Filter (Custom Multi-select Dropdown) -->
				@multiSelectDropdown("user_id", "Users", userOptions(users))
				<!-- Action Filter (Custom Multi-select Dropdown) -->
				@multiSelectDropdown("action", "Actions", stringOptions(actions))
				<!-- Resource Type Filter (Custom Multi-select Dropdown) -->
				@multiSelectDropdown("resource_type", "Resource Types", stringOptions(resourceTypes))
				<!-- Result Filter (Custom Multi-select Dropdown) -->
				@multiSelectDropdown("result", "Results", []selectOption{
					{Value: "success", Label: "Success"},
					{Value: "denied", Label: "Denied"},
					{Value: "error", Label: "Error"},
				})
				<!-- Start Date Filter (Flatpickr) -->
				<div>
					<label class="block text-sm font-medium text-subtext0 mb-1">Start Date</label>
					<input
						type="text"
						name="start_date"
						class="flatpickr-date w-full bg-mantle border border-surface1 rounded px-3 py-2 text-text focus:outline-none focus:border-blue"
						placeholder="DD/MM/YYYY"
						onchange="this.form.requestSubmit()"
					/>
				</div>
				<!-- End Date Filter (Flatpickr) -->
				<div>
					<label class="block text-sm font-medium text-subtext0 mb-1">End Date</label>
					<input
						type="text"
						name="end_date"
						class="flatpickr-date w-full bg-mantle border border-surface1 rounded px-3 py-2 text-text focus:outline-none focus:border-blue"
						placeholder="DD/MM/YYYY"
						onchange="this.form.requestSubmit()"
					/>
				</div>
				<!-- Clear Filters Button -->
				<div class="md:col-span-2 lg:col-span-3 flex gap-2">
					<button
						type="button"
						onclick="clearAuditFilters()"
						class="px-4 py-2 bg-surface1 hover:bg-surface2 text-text rounded font-medium transition hover:cursor-pointer"
					>
						Clear Filters
					</button>
				</div>
			</form>
		</div>
		<!-- Results container - this gets replaced by HTMX -->
		<div id="audit-results-container">
			@AuditLogsResults(logs)
		</div>
		<!-- Modal container for detail view -->
		<div id="modal-container"></div>
	</div>
}

templ AuditLogsResults(logs *db.List[db.AuditLog]) {
	<div
		x-data={ fmt.Sprintf("{ page: %d, perPage: %d, order: '%s', orderBy: '%s' }",
			logs.PageOpts.Page,
			logs.PageOpts.PerPage,
			logs.PageOpts.Order,
			logs.PageOpts.OrderBy) }
	>
		<!-- Results section -->
		if len(logs.Items) == 0 {
			<div class="bg-mantle border border-surface1 rounded-lg p-8 text-center">
				<p class="text-subtext0 text-lg">No audit logs found</p>
			</div>
		} else {
			<div class="bg-surface0 border border-surface1 rounded-lg overflow-hidden">
				<div class="overflow-x-auto">
					<table class="w-full">
						<thead class="bg-mantle border-b border-surface1">
							<tr>
								@auditTableHeader("created_at", "Timestamp", logs.PageOpts.OrderBy, string(logs.PageOpts.Order))
								@auditTableHeader("user_id", "User", logs.PageOpts.OrderBy, string(logs.PageOpts.Order))
								@auditTableHeader("action", "Action", logs.PageOpts.OrderBy, string(logs.PageOpts.Order))
								@auditTableHeader("resource_type", "Resource", logs.PageOpts.OrderBy, string(logs.PageOpts.Order))
								@auditTableHeader("resource_id", "Resource ID", logs.PageOpts.OrderBy, string(logs.PageOpts.Order))
								@auditTableHeader("result", "Result", logs.PageOpts.OrderBy, string(logs.PageOpts.Order))
								<th class="px-4 py-3 text-left text-sm font-semibold text-text">Actions</th>
							</tr>
						</thead>
						<tbody class="divide-y divide-surface1">
							for _, log := range logs.Items {
								<tr class="hover:bg-surface1 transition-colors">
									<td class="px-4 py-3 text-sm text-subtext0 whitespace-nowrap">
										{ formatFullTimestamp(log.CreatedAt) }
									</td>
									<td class="px-4 py-3 text-sm font-medium text-text">
										if log.User != nil {
											{ log.User.Username }
										} else {
											<span class="text-subtext1 italic">Unknown</span>
										}
									</td>
									<td class="px-4 py-3 text-xs text-subtext0 font-mono">
										{ log.Action }
									</td>
									<td class="px-4 py-3 text-sm text-subtext0">
										{ log.ResourceType }
									</td>
									<td class="px-4 py-3 text-sm text-subtext0 font-mono">
										if log.ResourceID != nil {
											{ *log.ResourceID }
										} else {
											<span class="text-subtext1 italic">—</span>
										}
									</td>
									<td class="px-4 py-3 text-sm">
										@resultBadge(log.Result)
									</td>
									<td class="px-4 py-3 text-sm">
										<button
											hx-get={ fmt.Sprintf("/admin/audit/%d", log.ID) }
											hx-target="#modal-container"
											class="px-3 py-1 bg-blue hover:bg-blue/80 text-mantle rounded text-xs font-medium transition hover:cursor-pointer"
										>
											Details
										</button>
									</td>
								</tr>
							}
						</tbody>
					</table>
				</div>
			</div>
			<!-- Pagination controls -->
			<div class="mt-6 flex flex-col gap-4">
				<!-- Page info and per-page selector -->
				<div class="flex flex-col sm:flex-row justify-between items-center gap-4 text-sm text-subtext0">
					<div>
						if logs.Total > 0 {
							Showing { fmt.Sprintf("%d", logs.PageOpts.StartItem()) } - { fmt.Sprintf("%d", logs.PageOpts.EndItem(logs.Total)) } of { fmt.Sprintf("%d", logs.Total) } results
						} else {
							No results
						}
					</div>
					<div class="flex items-center gap-2">
						<label for="per-page-select">Per page:</label>
						<select
							id="per-page-select"
							class="py-1 px-2 rounded-lg bg-surface0 border border-surface1 text-text focus:border-blue outline-none"
							x-model.number="perPage"
							@change="submitAuditFilter(page, perPage, order, orderBy)"
						>
							<option value="10">10</option>
							<option value="25">25</option>
							<option value="50">50</option>
							<option value="100">100</option>
						</select>
					</div>
				</div>
				<!-- Pagination buttons -->
				if logs.Total > 0 && logs.PageOpts.TotalPages(logs.Total) > 1 {
					<div class="flex flex-wrap justify-center items-center gap-2">
						<!-- First button -->
						<button
							type="button"
							@click="submitAuditFilter(1, perPage, order, orderBy)"
							class="px-3 py-2 rounded-lg border transition border-surface1 text-text bg-mantle"
							:disabled={ fmt.Sprintf("%t", !logs.PageOpts.HasPrevPage()) }
							:class={ fmt.Sprintf("%t", !logs.PageOpts.HasPrevPage()) + 
								" ? 'text-subtext0 cursor-not-allowed opacity-50' : 'hover:bg-surface0 hover:border-blue cursor-pointer'" }
						>
							<span class="hidden sm:inline">First</span>
							<span class="sm:hidden">&lt;&lt;</span>
						</button>
						<!-- Previous button -->
						<button
							type="button"
							@click={ fmt.Sprintf("submitAuditFilter(%d, perPage, order, orderBy)", logs.PageOpts.Page-1) }
							class="px-3 py-2 rounded-lg border transition border-surface1 text-text bg-mantle"
							:disabled={ fmt.Sprintf("%t", !logs.PageOpts.HasPrevPage()) }
							:class={ fmt.Sprintf("%t", !logs.PageOpts.HasPrevPage()) + 
								" ? 'text-subtext0 cursor-not-allowed opacity-50' : 'hover:bg-surface0 hover:border-blue cursor-pointer'" }
						>
							<span class="hidden sm:inline">Previous</span>
							<span class="sm:hidden">&lt;</span>
						</button>
						<!-- Page numbers -->
						for _, pageNum := range logs.PageOpts.GetPageRange(logs.Total, 7) {
							<button
								type="button"
								@click={ fmt.Sprintf("submitAuditFilter(%d, perPage, order, orderBy)", pageNum) }
								class={ "px-3 py-2 rounded-lg border transition", 
									templ.KV("bg-blue border-blue text-mantle font-bold", pageNum == logs.PageOpts.Page),
									templ.KV("bg-mantle border-surface1 text-text hover:bg-surface0 hover:border-blue cursor-pointer", pageNum != logs.PageOpts.Page) }
							>
								{ fmt.Sprintf("%d", pageNum) }
							</button>
						}
						<!-- Next button -->
						<button
							type="button"
							@click={ fmt.Sprintf("submitAuditFilter(%d, perPage, order, orderBy)", logs.PageOpts.Page+1) }
							class="px-3 py-2 rounded-lg border transition border-surface1 text-text bg-mantle"
							:disabled={ fmt.Sprintf("%t", !logs.PageOpts.HasNextPage(logs.Total)) }
							:class={ fmt.Sprintf("%t", !logs.PageOpts.HasNextPage(logs.Total)) + 
								" ? 'text-subtext0 cursor-not-allowed opacity-50' : 'hover:bg-surface0 hover:border-blue cursor-pointer'" }
						>
							<span class="hidden sm:inline">Next</span>
							<span class="sm:hidden">&gt;</span>
						</button>
						<!-- Last button -->
						<button
							type="button"
							@click={ fmt.Sprintf("submitAuditFilter(%d, perPage, order, orderBy)", logs.PageOpts.TotalPages(logs.Total)) }
							class="px-3 py-2 rounded-lg border transition border-surface1 text-text bg-mantle"
							:disabled={ fmt.Sprintf("%t", !logs.PageOpts.HasNextPage(logs.Total)) }
							:class={ fmt.Sprintf("%t", !logs.PageOpts.HasNextPage(logs.Total)) + 
								" ? 'text-subtext0 cursor-not-allowed opacity-50' : 'hover:bg-surface0 hover:border-blue cursor-pointer'" }
						>
							<span class="hidden sm:inline">Last</span>
							<span class="sm:hidden">&gt;&gt;</span>
						</button>
					</div>
				}
			</div>
		}
	</div>
}

templ auditTableHeader(field string, label string, currentField string, currentOrder string) {
	{{
		isActive := currentField == field
		baseClasses := "px-4 py-3 text-left text-sm font-semibold text-text cursor-pointer select-none hover:text-blue transition-colors"
		arrow := ""
		if isActive {
			if currentOrder == "ASC" {
				arrow = " ↑"
			} else {
				arrow = " ↓"
			}
		}
	}}
	<th class={ baseClasses } @click={ fmt.Sprintf("sortAuditColumn('%s', order, orderBy)", field) }>
		{ label }
		if arrow != "" {
			<span class="text-blue">{ arrow }</span>
		}
	</th>
}

type selectOption struct {
	Value string
	Label string
}

func userOptions(users []*db.User) []selectOption {
	opts := make([]selectOption, len(users))
	for i, u := range users {
		opts[i] = selectOption{Value: fmt.Sprintf("%d", u.ID), Label: u.Username}
	}
	return opts
}

func stringOptions(strs []string) []selectOption {
	opts := make([]selectOption, len(strs))
	for i, s := range strs {
		opts[i] = selectOption{Value: s, Label: s}
	}
	return opts
}

templ multiSelectDropdown(name string, label string, options []selectOption) {
	{{ containerId := name + "-container" }}
	<div>
		<label class="block text-sm font-medium text-subtext0 mb-1">{ label }</label>
		<div
			id={ containerId }
			class="multi-select-container relative"
		>
			<!-- Hidden input to store values -->
			<input type="hidden" name={ name } value=""/>
			<!-- Trigger button -->
			<button
				type="button"
				onclick={ templ.JSUnsafeFuncCall(fmt.Sprintf("toggleMultiSelect('%s')", containerId)) }
				class="multi-select-trigger w-full bg-mantle border border-surface1 rounded px-3 py-2 text-text text-left flex justify-between items-center hover:border-surface2 focus:outline-none focus:border-blue"
			>
				<span class="multi-select-selected">
					<span class="text-subtext1">Select...</span>
				</span>
				<svg class="w-4 h-4 text-subtext0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"></path>
				</svg>
			</button>
			<!-- Dropdown -->
			<div
				id={ containerId + "-dropdown" }
				class="multi-select-dropdown hidden absolute z-50 w-full mt-1 bg-mantle border border-surface1 rounded shadow-lg max-h-60 overflow-y-auto"
			>
				for _, opt := range options {
					<div
						data-value={ opt.Value }
						class="multi-select-option px-3 py-2 text-sm text-text cursor-pointer hover:bg-surface1 transition-colors"
						onclick={ templ.JSUnsafeFuncCall(fmt.Sprintf("toggleMultiSelectOption('%s', '%s', '%s')", containerId, opt.Value, opt.Label)) }
					>
						{ opt.Label }
					</div>
				}
			</div>
		</div>
	</div>
}

templ resultBadge(result string) {
	{{
		var classes string
		switch result {
		case "success":
			classes = "px-2 py-0.5 bg-green/20 text-green rounded text-xs font-medium"
		case "denied":
			classes = "px-2 py-0.5 bg-yellow/20 text-yellow rounded text-xs font-medium"
		case "error":
			classes = "px-2 py-0.5 bg-red/20 text-red rounded text-xs font-medium"
		default:
			classes = "px-2 py-0.5 bg-surface1 text-subtext0 rounded text-xs font-medium"
		}
	}}
	<span class={ classes }>{ result }</span>
}

func formatFullTimestamp(unixTime int64) string {
	t := time.Unix(unixTime, 0)
	return t.Format("Jan 2, 2006 15:04:05")
}