package commands

import (
	"encoding/json"
	"fmt"
	"os"

	"github.com/spf13/cobra"
)

// NewAnalyticsCmd creates the analytics command group
func NewAnalyticsCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "analytics",
		Short: "Analytics and intelligence commands",
		Long:  "Commands for churn analysis, fraud detection, market analytics, and pricing optimization",
	}

	cmd.AddCommand(newChurnCmd())
	cmd.AddCommand(newFraudCmd())
	cmd.AddCommand(newMarketCmd())
	cmd.AddCommand(newPricingCmd())
	cmd.AddCommand(newMaintenanceCmd())

	return cmd
}

func newChurnCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "churn",
		Short: "Churn analysis commands",
	}

	cmd.AddCommand(&cobra.Command{
		Use:   "predict [profile-id]",
		Short: "Predict churn risk for a profile",
		Args:  cobra.ExactArgs(1),
		Run: func(cmd *cobra.Command, args []string) {
			profileID := args[0]
			fmt.Printf("🔮 Predicting churn for profile: %s\n\n", profileID)

			// Simulated prediction
			prediction := map[string]any{
				"profile_id":      profileID,
				"risk_level":      "medium",
				"risk_score":      45.5,
				"reasons":         []string{"Decreased usage", "No recent upgrades"},
				"recommendations": []string{"Offer loyalty discount", "Proactive outreach"},
			}

			data, _ := json.MarshalIndent(prediction, "", "  ")
			fmt.Println(string(data))
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "metrics",
		Short: "Get churn metrics",
		Run: func(cmd *cobra.Command, args []string) {
			period, _ := cmd.Flags().GetString("period")
			fmt.Printf("📊 Churn Metrics (%s)\n", period)

			metrics := map[string]any{
				"period":             period,
				"total_subscribers":  150000,
				"churned":            2250,
				"churn_rate":         "1.5%",
				"monthly_churn_rate": "1.5%",
				"annual_churn_rate":  "18.0%",
			}

			data, _ := json.MarshalIndent(metrics, "", "  ")
			fmt.Println(string(data))
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "at-risk",
		Short: "List at-risk customers",
		Run: func(cmd *cobra.Command, args []string) {
			riskLevel, _ := cmd.Flags().GetString("risk-level")
			limit, _ := cmd.Flags().GetInt("limit")

			fmt.Printf("👥 At-Risk Customers (Level: %s, Limit: %d)\n", riskLevel, limit)
			fmt.Println("Profile ID       | Risk Score | Predicted Churn Date")
			fmt.Println("-----------------+------------+---------------------")
			fmt.Println("profile-001      | 85.0       | 2026-06-15")
			fmt.Println("profile-002      | 78.5       | 2026-06-22")
			fmt.Println("profile-003      | 72.0       | 2026-07-01")
		},
	})

	// Add flags
	cmd.PersistentFlags().String("period", "monthly", "Time period (daily, weekly, monthly, quarterly)")
	cmd.PersistentFlags().String("risk-level", "high", "Risk level filter (low, medium, high, critical)")
	cmd.PersistentFlags().Int("limit", 100, "Maximum number of results")

	return cmd
}

func newFraudCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "fraud",
		Short: "Fraud detection commands",
	}

	cmd.AddCommand(&cobra.Command{
		Use:   "alerts",
		Short: "List fraud alerts",
		Run: func(cmd *cobra.Command, args []string) {
			severity, _ := cmd.Flags().GetString("severity")
			fmt.Printf("🚨 Fraud Alerts (Severity: %s)\n", severity)

			fmt.Println("Alert ID    | Type              | Severity | Profile    | Status")
			fmt.Println("------------+-------------------+----------+------------+--------")
			fmt.Println("alert-001   | account_takeover  | high     | profile-123| new")
			fmt.Println("alert-002   | payment_fraud     | medium   | profile-456| investigating")
			fmt.Println("alert-003   | sim_swap          | critical | profile-789| blocked")
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "metrics",
		Short: "Get fraud detection metrics",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("📊 Fraud Detection Metrics")

			metrics := map[string]any{
				"total_alerts":        1250,
				"resolved_alerts":     1100,
				"false_positives":     125,
				"resolution_rate":     "88.0%",
				"false_positive_rate": "10.0%",
			}

			data, _ := json.MarshalIndent(metrics, "", "  ")
			fmt.Println(string(data))
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "patterns",
		Short: "Show detected fraud patterns",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("🔍 Detected Fraud Patterns")

			patterns := []map[string]string{
				{"name": "Velocity Attack", "frequency": "high", "mitigation": "Rate limiting"},
				{"name": "Account Enumeration", "frequency": "medium", "mitigation": "CAPTCHA"},
				{"name": "SIM Swap Attack", "frequency": "low", "mitigation": "Multi-factor verification"},
			}

			for _, p := range patterns {
				fmt.Printf("• %s (Frequency: %s)\n  Mitigation: %s\n", p["name"], p["frequency"], p["mitigation"])
			}
		},
	})

	cmd.PersistentFlags().String("severity", "all", "Severity filter (low, medium, high, critical, all)")
	cmd.PersistentFlags().String("type", "", "Fraud type filter")

	return cmd
}

func newMarketCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "market",
		Short: "Market analytics commands",
	}

	cmd.AddCommand(&cobra.Command{
		Use:   "metrics",
		Short: "Get market penetration metrics",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("📈 Market Analytics")

			metrics := map[string]any{
				"total_market_size": "5.5B",
				"our_subscribers":   150000,
				"market_share":      "0.0027%",
				"growth_rate":       "12.5%",
			}

			data, _ := json.MarshalIndent(metrics, "", "  ")
			fmt.Println(string(data))
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "competitors",
		Short: "Show competitor analysis",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("🛡️  Competitor Analysis")

			fmt.Println("Competitor | Market Share | Threat Level")
			fmt.Println("-----------+--------------+-------------")
			fmt.Println("AT&T       | 35.5%        | high")
			fmt.Println("Verizon    | 32.0%        | high")
			fmt.Println("T-Mobile   | 21.3%        | medium")
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "opportunities",
		Short: "Show market opportunities",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("💡 Market Opportunities")

			fmt.Println("Opportunity      | Country | Potential Subs | Expected ROI")
			fmt.Println("-----------------+---------+----------------+-------------")
			fmt.Println("5G Migration     | US      | 50M            | 25%")
			fmt.Println("IoT Services     | UK      | 20M            | 30%")
			fmt.Println("Enterprise 5G    | DE      | 15M            | 20%")
		},
	})

	return cmd
}

func newPricingCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "pricing",
		Short: "Pricing optimization commands",
	}

	cmd.AddCommand(&cobra.Command{
		Use:   "metrics",
		Short: "Get pricing metrics",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("💰 Pricing Analytics")

			metrics := map[string]any{
				"total_revenue":     "$4.5M",
				"arpu":              "$30.00",
				"price_elasticity":  -1.2,
				"competitive_index": 75.0,
				"optimization_roi":  "15.5%",
			}

			data, _ := json.MarshalIndent(metrics, "", "  ")
			fmt.Println(string(data))
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "optimize [rate-plan-id]",
		Short: "Optimize pricing for a rate plan",
		Args:  cobra.ExactArgs(1),
		Run: func(cmd *cobra.Command, args []string) {
			ratePlanID := args[0]
			strategy, _ := cmd.Flags().GetString("strategy")

			fmt.Printf("🎯 Optimizing pricing for %s (Strategy: %s)\n\n", ratePlanID, strategy)

			result := map[string]any{
				"rate_plan_id":     ratePlanID,
				"current_price":    "$29.99",
				"optimal_price":    "$32.99",
				"price_change":     "+10%",
				"expected_revenue": "$165,000",
				"confidence":       "85%",
			}

			data, _ := json.MarshalIndent(result, "", "  ")
			fmt.Println(string(data))
		},
	})

	cmd.PersistentFlags().String("strategy", "revenue_maximization", "Optimization strategy")

	return cmd
}

func newMaintenanceCmd() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "maintenance",
		Short: "Predictive maintenance commands",
	}

	cmd.AddCommand(&cobra.Command{
		Use:   "metrics",
		Short: "Get maintenance metrics",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("🔧 Maintenance Metrics")

			metrics := map[string]any{
				"total_assets":   1250,
				"healthy_assets": 1180,
				"at_risk":        70,
				"uptime":         "99.95%",
				"mttf":           "8760 hours",
				"mttr":           "4 hours",
			}

			data, _ := json.MarshalIndent(metrics, "", "  ")
			fmt.Println(string(data))
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "assets",
		Short: "List assets health status",
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Println("🖥️  Assets Health")

			fmt.Println("Asset ID   | Name             | Type     | Health | Status")
			fmt.Println("-----------+------------------+----------+--------+--------")
			fmt.Println("server-1   | Web Server 1     | server   | 85%    | healthy")
			fmt.Println("server-2   | Web Server 2     | server   | 92%    | healthy")
			fmt.Println("db-1       | Primary Database | database | 78%    | warning")
		},
	})

	cmd.AddCommand(&cobra.Command{
		Use:   "predict [asset-id]",
		Short: "Predict failure for an asset",
		Args:  cobra.ExactArgs(1),
		Run: func(cmd *cobra.Command, args []string) {
			assetID := args[0]
			fmt.Printf("🔮 Failure Prediction for %s\n\n", assetID)

			prediction := map[string]any{
				"asset_id":            assetID,
				"failure_probability": "15%",
				"predicted_failure":   "2026-09-01",
				"confidence":          "82.5%",
				"risk_factors":        []string{"Age", "Error rate increase"},
				"recommendations":     []string{"Schedule maintenance", "Monitor closely"},
			}

			data, _ := json.MarshalIndent(prediction, "", "  ")
			fmt.Println(string(data))
		},
	})

	return cmd
}

func init() {
	// Suppress unused import error
	_ = os.Stdout
}