package main

import (
	"fmt"
	"time"

	"go-eve-pi/esi"
	"go-eve-pi/options"
	"go-eve-pi/repositories"
	"go-eve-pi/routes"
	"go-eve-pi/types"
	wh "go-eve-pi/webhook"

	logger "git.site.quack-lab.dev/dave/cylogger"
)

// Orchestrator manages periodic data refetching and monitoring
type Orchestrator struct {
	esiClient    esi.ESIInterface
	ssoClient    routes.SSOInterface
	database     repositories.DatabaseInterface
	webhook      *wh.ZulipWebhook
	expiryTimers map[string]time.Time // Track extractor expiry times
}

// NewOrchestrator creates a new orchestrator instance
func NewOrchestrator(esiClient esi.ESIInterface, ssoClient routes.SSOInterface, database repositories.DatabaseInterface, webhook *wh.ZulipWebhook) *Orchestrator {
	return &Orchestrator{
		esiClient:    esiClient,
		ssoClient:    ssoClient,
		database:     database,
		webhook:      webhook,
		expiryTimers: make(map[string]time.Time),
	}
}

// Start begins the orchestrator's periodic operations
func (o *Orchestrator) Start() {
	logger.Info("Starting orchestrator with cache validity: %s", options.GlobalOptions.CacheValidity)

	// Parse cache validity duration
	cacheValidity, err := time.ParseDuration(options.GlobalOptions.CacheValidity)
	if err != nil {
		logger.Error("Invalid cache validity duration %s: %v", options.GlobalOptions.CacheValidity, err)
		return
	}

	// Parse expiry warning and critical durations
	expiryWarning, err := time.ParseDuration(options.GlobalOptions.ExpiryWarning)
	if err != nil {
		logger.Error("Invalid expiry warning duration %s: %v", options.GlobalOptions.ExpiryWarning, err)
		return
	}

	expiryCritical, err := time.ParseDuration(options.GlobalOptions.ExpiryCritical)
	if err != nil {
		logger.Error("Invalid expiry critical duration %s: %v", options.GlobalOptions.ExpiryCritical, err)
		return
	}

	// Run initial fetch
	o.refetchAllData()

	// Set up periodic refetching
	ticker := time.NewTicker(cacheValidity)
	go func() {
		for range ticker.C {
			logger.Info("Cache validity period reached, refetching all data")
			o.refetchAllData()
		}
	}()

	// Set up periodic expiry checking
	expiryTicker := time.NewTicker(1 * time.Hour) // Check every hour
	go func() {
		for range expiryTicker.C {
			logger.Debug("Checking extractor expiry timers")
			o.checkExpiryTimers(expiryWarning, expiryCritical)
		}
	}()

	logger.Info("Orchestrator started successfully")
}

// refetchAllData fetches data for all characters and checks thresholds
func (o *Orchestrator) refetchAllData() {
	logger.Info("Starting data refetch for all characters")

	// Get all characters from database
	characters, err := o.database.Character().GetAllCharacters()
	if err != nil {
		logger.Error("Failed to get all characters: %v", err)
		return
	}

	logger.Info("Found %d characters to process", len(characters))

	// Process each character
	for _, char := range characters {
		o.processCharacter(char)
	}

	logger.Info("Completed data refetch for all characters")
}

// processCharacter processes a single character's data
func (o *Orchestrator) processCharacter(char types.Character) {
	logger.Debug("Processing character: %s", char.CharacterName)

	// Get extractors for this character
	extractors, err := routes.GetExtractorsForCharacter(o.esiClient, int(char.ID), char.AccessToken)
	if err != nil {
		logger.Warning("Failed to get extractors for character %s: %v", char.CharacterName, err)
		return
	}

	// Get storage for this character
	storage, err := routes.GetStorageForCharacter(o.esiClient, int(char.ID), char.AccessToken)
	if err != nil {
		logger.Warning("Failed to get storage for character %s: %v", char.CharacterName, err)
		return
	}

	// Check storage thresholds
	o.checkStorageThresholds(char.CharacterName, storage)

	// Update expiry timers for extractors
	o.updateExpiryTimers(char.CharacterName, extractors)

	logger.Debug("Completed processing character: %s", char.CharacterName)
}

// checkStorageThresholds checks storage utilization against configured thresholds
func (o *Orchestrator) checkStorageThresholds(characterName string, storage []routes.StorageInfo) {
	warningThreshold := options.GlobalOptions.StorageWarning
	criticalThreshold := options.GlobalOptions.StorageCritical

	for _, s := range storage {
		if s.Utilization >= criticalThreshold {
			message := routes.FormatStorageAlert(s, true)
			o.sendWebhook(characterName, message)
		} else if s.Utilization >= warningThreshold {
			message := routes.FormatStorageAlert(s, false)
			o.sendWebhook(characterName, message)
		}
	}
}

// updateExpiryTimers updates the in-memory expiry timers for extractors
func (o *Orchestrator) updateExpiryTimers(characterName string, extractors []routes.ExtractorInfo) {
	for _, extractor := range extractors {
		if extractor.ExpiryDate == "N/A" {
			continue
		}

		expiryTime, err := time.Parse(time.RFC3339, extractor.ExpiryDate)
		if err != nil {
			logger.Warning("Failed to parse expiry date %s for character %s: %v", extractor.ExpiryDate, characterName, err)
			continue
		}

		// Store the earliest expiry time for this character
		key := fmt.Sprintf("%s_%s", characterName, extractor.PlanetName)
		if existingTime, exists := o.expiryTimers[key]; !exists || expiryTime.Before(existingTime) {
			o.expiryTimers[key] = expiryTime
		}
	}
}

// checkExpiryTimers checks all expiry timers and sends alerts if needed
func (o *Orchestrator) checkExpiryTimers(warningDuration, criticalDuration time.Duration) {
	now := time.Now()

	for key, expiryTime := range o.expiryTimers {
		timeUntilExpiry := expiryTime.Sub(now)

		if timeUntilExpiry <= criticalDuration {
			// Critical: extractor expired or about to expire
			characterName, planetName := o.parseExpiryKey(key)
			message := fmt.Sprintf("CRITICAL: Extractor expired on %s (expired: %s)",
				planetName, expiryTime.Format("2006-01-02 15:04:05"))
			o.sendWebhook(characterName, message)
		} else if timeUntilExpiry <= warningDuration {
			// Warning: extractor expiring soon
			characterName, planetName := o.parseExpiryKey(key)
			message := fmt.Sprintf("WARNING: Extractor expiring soon on %s (expires: %s)",
				planetName, expiryTime.Format("2006-01-02 15:04:05"))
			o.sendWebhook(characterName, message)
		}
	}
}

// parseExpiryKey parses the expiry timer key to extract character and planet names
func (o *Orchestrator) parseExpiryKey(key string) (characterName, planetName string) {
	// Key format: "characterName_planetName"
	// Find the last underscore to split properly
	for i := len(key) - 1; i >= 0; i-- {
		if key[i] == '_' {
			characterName = key[:i]
			planetName = key[i+1:]
			break
		}
	}
	return
}

// sendWebhook sends a webhook notification
func (o *Orchestrator) sendWebhook(characterName, message string) {
	if o.webhook == nil {
		logger.Warning("Webhook not configured, skipping notification: %s", message)
		return
	}

	logger.Info("Sending webhook notification for character %s: %s", characterName, message)

	// Send webhook with character name as topic and message as content
	err := o.webhook.Post("Eve PI", characterName, message)
	if err != nil {
		logger.Error("Failed to send webhook for character %s: %v", characterName, err)
	}
}