<template>
  <div class="substitution-panel">
    <div class="panel-container">
      <!-- Panel Header -->
      <div class="panel-header">
        <h2 class="panel-title">Substitutions</h2>
        <div class="panel-status">
          <div :class="['status-indicator', statusClass]"></div>
          <span class="status-text">{{ statusText }}</span>
        </div>
      </div>

      <!-- Tab Navigation -->
      <div class="tab-navigation">
        <button
          v-for="tab in tabs"
          :key="tab.type"
          :class="['tab-button', currentTab === tab.type ? 'tab-active' : 'tab-inactive']"
          @click="selectTab(tab.type)"
        >
          <span class="tab-icon">{{ tab.icon }}</span>
          <span class="tab-label">{{ tab.label }}</span>
        </button>
      </div>

      <!-- Panel Content -->
      <div class="panel-content">
        <!-- No Selection State -->
        <div v-if="!currentTab" class="state-idle">
          <div class="state-message">
            <svg class="w-12 h-12 text-gray-400" fill="currentColor" viewBox="0 0 20 20">
              <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm1-12a1 1 0 10-2 0v4a1 1 0 00.293.707l2.828 2.829a1 1 0 101.415-1.415L11 9.586V6z" clip-rule="evenodd"/>
            </svg>
            <div class="message-text">
              Select a substitution type above
            </div>
          </div>
        </div>

        <!-- Pinch Hitter -->
        <template v-else-if="currentTab === 'pinch_hitter'">
          <div class="instruction-box">
            <svg class="w-6 h-6 text-blue-600" fill="currentColor" viewBox="0 0 20 20">
              <path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"/>
            </svg>
            <span>Select a bench player to bat in place of the current batter</span>
          </div>

          <PinchHitterSelector
            :player-out="currentBatter"
            :bench-players="benchPlayers"
            :team-id="teamId"
            @submit="handlePinchHitterSubmit"
            @cancel="handleCancel"
          />
        </template>

        <!-- Defensive Replacement -->
        <template v-else-if="currentTab === 'defensive_replacement'">
          <div class="instruction-box">
            <svg class="w-6 h-6 text-blue-600" fill="currentColor" viewBox="0 0 20 20">
              <path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"/>
            </svg>
            <span>Replace a defensive player with a bench player</span>
          </div>

          <DefensiveReplacementSelector
            :player-out="selectedDefensivePlayer"
            :bench-players="benchPlayers"
            :team-id="teamId"
            @submit="handleDefensiveReplacementSubmit"
            @cancel="handleCancel"
          />

          <!-- Player Selection (if no player selected) -->
          <div v-if="!selectedDefensivePlayer" class="player-selection">
            <div class="selection-label">Select player to replace:</div>
            <div class="player-grid">
              <button
                v-for="player in activeFielders"
                :key="player.id"
                class="player-button"
                @click="selectDefensivePlayer(player)"
              >
                <div class="player-name">{{ player.player.name }}</div>
                <div class="player-position">{{ player.position }}</div>
              </button>
            </div>
          </div>
        </template>

        <!-- Pitching Change -->
        <template v-else-if="currentTab === 'pitching_change'">
          <div class="instruction-box">
            <svg class="w-6 h-6 text-blue-600" fill="currentColor" viewBox="0 0 20 20">
              <path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"/>
            </svg>
            <span>Bring in a relief pitcher from the bench</span>
          </div>

          <PitchingChangeSelector
            :current-pitcher="currentPitcher"
            :bench-players="benchPlayers"
            :team-id="teamId"
            @submit="handlePitchingChangeSubmit"
            @cancel="handleCancel"
          />
        </template>

        <!-- Error State -->
        <div v-if="error" class="error-message">
          <svg class="w-6 h-6 text-red-600" fill="currentColor" viewBox="0 0 20 20">
            <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd"/>
          </svg>
          <span>{{ error }}</span>
        </div>

        <!-- Success State -->
        <div v-if="success" class="success-message">
          <svg class="w-6 h-6 text-green-600" fill="currentColor" viewBox="0 0 20 20">
            <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"/>
          </svg>
          <span>{{ success }}</span>
        </div>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, computed } from 'vue'
import type { Lineup, SubstitutionType } from '~/types'
import PinchHitterSelector from './PinchHitterSelector.vue'
import DefensiveReplacementSelector from './DefensiveReplacementSelector.vue'
import PitchingChangeSelector from './PitchingChangeSelector.vue'

interface TabDefinition {
  type: SubstitutionType
  label: string
  icon: string
}

interface Props {
  gameId: string
  teamId: number
  currentLineup: Lineup[]
  benchPlayers: Lineup[]
  currentPitcher: Lineup | null
  currentBatter: Lineup | null
}

const props = defineProps<Props>()

const emit = defineEmits<{
  pinchHitter: [{ playerOutLineupId: number; playerInCardId: number; teamId: number }]
  defensiveReplacement: [{ playerOutLineupId: number; playerInCardId: number; newPosition: string; teamId: number }]
  pitchingChange: [{ playerOutLineupId: number; playerInCardId: number; teamId: number }]
  cancel: []
}>()

// Tab definitions
const tabs: TabDefinition[] = [
  { type: 'pinch_hitter', label: 'Pinch Hitter', icon: '🏏' },
  { type: 'defensive_replacement', label: 'Defensive Sub', icon: '🧤' },
  { type: 'pitching_change', label: 'Pitching Change', icon: '⚾' },
]

// Local state
const currentTab = ref<SubstitutionType | null>(null)
const selectedDefensivePlayer = ref<Lineup | null>(null)
const error = ref<string | null>(null)
const success = ref<string | null>(null)

// Computed
const activeFielders = computed(() => {
  return props.currentLineup.filter(p => p.is_active && p.position !== 'P')
})

const statusClass = computed(() => {
  if (error.value) return 'status-error'
  if (success.value) return 'status-success'
  if (currentTab.value) return 'status-active'
  return 'status-idle'
})

const statusText = computed(() => {
  if (error.value) return 'Error'
  if (success.value) return 'Success'
  if (currentTab.value) return 'Active'
  return 'Idle'
})

// Methods
const selectTab = (type: SubstitutionType) => {
  currentTab.value = type
  error.value = null
  success.value = null

  // Reset defensive player selection when switching tabs
  if (type !== 'defensive_replacement') {
    selectedDefensivePlayer.value = null
  }
}

const selectDefensivePlayer = (player: Lineup) => {
  selectedDefensivePlayer.value = player
}

const handlePinchHitterSubmit = (payload: { playerOutLineupId: number; playerInCardId: number; teamId: number }) => {
  error.value = null
  success.value = null

  try {
    emit('pinchHitter', payload)
    success.value = 'Pinch hitter substitution submitted'

    // Reset after short delay
    setTimeout(() => {
      success.value = null
      currentTab.value = null
    }, 2000)
  } catch (err) {
    error.value = err instanceof Error ? err.message : 'Failed to submit substitution'
  }
}

const handleDefensiveReplacementSubmit = (payload: { playerOutLineupId: number; playerInCardId: number; newPosition: string; teamId: number }) => {
  error.value = null
  success.value = null

  try {
    emit('defensiveReplacement', payload)
    success.value = 'Defensive replacement submitted'

    // Reset after short delay
    setTimeout(() => {
      success.value = null
      currentTab.value = null
      selectedDefensivePlayer.value = null
    }, 2000)
  } catch (err) {
    error.value = err instanceof Error ? err.message : 'Failed to submit substitution'
  }
}

const handlePitchingChangeSubmit = (payload: { playerOutLineupId: number; playerInCardId: number; teamId: number }) => {
  error.value = null
  success.value = null

  try {
    emit('pitchingChange', payload)
    success.value = 'Pitching change submitted'

    // Reset after short delay
    setTimeout(() => {
      success.value = null
      currentTab.value = null
    }, 2000)
  } catch (err) {
    error.value = err instanceof Error ? err.message : 'Failed to submit substitution'
  }
}

const handleCancel = () => {
  error.value = null
  success.value = null
  currentTab.value = null
  selectedDefensivePlayer.value = null
  emit('cancel')
}
</script>

<style scoped>
.substitution-panel {
  @apply w-full;
}

.panel-container {
  @apply bg-gradient-to-br from-gray-50 to-gray-100 rounded-xl shadow-lg;
  @apply border border-gray-200;
}

/* Header */
.panel-header {
  @apply flex justify-between items-center px-6 py-4 border-b border-gray-200;
  @apply bg-white rounded-t-xl;
}

.panel-title {
  @apply text-xl font-bold text-gray-900;
}

.panel-status {
  @apply flex items-center gap-2;
}

.status-indicator {
  @apply w-3 h-3 rounded-full;
}

.status-idle {
  @apply bg-gray-400;
}

.status-active {
  @apply bg-blue-500 animate-pulse;
}

.status-success {
  @apply bg-green-500;
}

.status-error {
  @apply bg-red-500;
}

.status-text {
  @apply text-sm font-medium text-gray-700;
}

/* Tab Navigation */
.tab-navigation {
  @apply flex border-b border-gray-200 bg-white px-2;
}

.tab-button {
  @apply flex items-center gap-2 px-4 py-3 font-semibold transition-all duration-200;
  @apply border-b-2 -mb-px;
}

.tab-inactive {
  @apply text-gray-600 border-transparent;
  @apply hover:text-gray-900 hover:border-gray-300;
}

.tab-active {
  @apply text-blue-600 border-blue-600;
}

.tab-icon {
  @apply text-xl;
}

.tab-label {
  @apply text-sm;
}

/* Content */
.panel-content {
  @apply p-6 space-y-4;
}

/* State Messages */
.state-message {
  @apply flex flex-col items-center justify-center py-12 space-y-4;
}

.message-text {
  @apply text-lg text-gray-600 text-center;
}

/* Instruction Box */
.instruction-box {
  @apply flex items-center gap-3 p-4 bg-blue-50 border border-blue-200 rounded-lg mb-4;
}

.instruction-box span {
  @apply text-sm font-medium text-blue-800;
}

/* Player Selection (for defensive replacement) */
.player-selection {
  @apply mt-6 space-y-3;
}

.selection-label {
  @apply text-sm font-semibold text-gray-700 uppercase tracking-wide;
}

.player-grid {
  @apply grid grid-cols-2 gap-3;
}

@media (min-width: 640px) {
  .player-grid {
    @apply grid-cols-3;
  }
}

@media (min-width: 1024px) {
  .player-grid {
    @apply grid-cols-4;
  }
}

.player-button {
  @apply p-3 bg-white border-2 border-gray-300 rounded-lg;
  @apply hover:border-blue-400 hover:bg-blue-50;
  @apply transition-all duration-150;
  @apply text-left min-h-[70px];
}

.player-name {
  @apply font-bold text-gray-900 text-sm;
}

.player-position {
  @apply text-xs text-gray-600 mt-1;
}

/* Error Message */
.error-message {
  @apply flex items-center gap-3 p-4 bg-red-50 border border-red-200 rounded-lg;
  @apply text-red-800 font-medium;
}

/* Success Message */
.success-message {
  @apply flex items-center gap-3 p-4 bg-green-50 border border-green-200 rounded-lg;
  @apply text-green-800 font-medium;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .panel-container {
    @apply from-gray-800 to-gray-900 border-gray-700;
  }

  .panel-header {
    @apply bg-gray-800 border-gray-700;
  }

  .panel-title {
    @apply text-gray-100;
  }

  .status-text {
    @apply text-gray-300;
  }

  .tab-navigation {
    @apply bg-gray-800 border-gray-700;
  }

  .tab-inactive {
    @apply text-gray-400;
    @apply hover:text-gray-200 hover:border-gray-600;
  }

  .tab-active {
    @apply text-blue-400 border-blue-400;
  }

  .message-text {
    @apply text-gray-400;
  }

  .instruction-box {
    @apply bg-blue-900 bg-opacity-30 border-blue-700;
  }

  .instruction-box span {
    @apply text-blue-300;
  }

  .selection-label {
    @apply text-gray-300;
  }

  .player-button {
    @apply bg-gray-700 border-gray-600 text-gray-200;
    @apply hover:border-blue-400 hover:bg-gray-600;
  }

  .player-name {
    @apply text-gray-100;
  }

  .player-position {
    @apply text-gray-400;
  }

  .error-message {
    @apply bg-red-900 bg-opacity-30 border-red-700 text-red-300;
  }

  .success-message {
    @apply bg-green-900 bg-opacity-30 border-green-700 text-green-300;
  }
}

/* Mobile optimizations */
@media (max-width: 640px) {
  .panel-header {
    @apply px-4 py-3;
  }

  .panel-title {
    @apply text-lg;
  }

  .panel-content {
    @apply p-4;
  }

  .state-message {
    @apply py-8;
  }

  .message-text {
    @apply text-base;
  }

  .tab-navigation {
    @apply px-1 overflow-x-auto;
  }

  .tab-button {
    @apply px-3 py-2;
  }

  .tab-label {
    @apply text-xs;
  }

  .player-grid {
    @apply grid-cols-1;
  }
}
</style>
