package handlers

import (
	"encoding/json"
	"fmt"
	"net/http"
	"time"

	"github.com/go-chi/chi/v5"
)

// QuixzoomHandler hanterar quiXzoom-integration
type QuixzoomHandler struct {
	baseURL string
	token   string
}

// NewQuixzoomHandler skapar en ny handler
func NewQuixzoomHandler() *QuixzoomHandler {
	return &QuixzoomHandler{
		baseURL: getEnv("QUIXZOOM_API_URL", ""),
		token:   getEnv("QUIXZOOM_API_TOKEN", ""),
	}
}

func (h *QuixzoomHandler) isConfigured() bool {
	return h.baseURL != "" && h.token != ""
}

func (h *QuixzoomHandler) apiGet(path string) (*http.Response, error) {
	req, err := http.NewRequest("GET", h.baseURL+path, nil)
	if err != nil {
		return nil, err
	}
	req.Header.Set("Authorization", "Bearer "+h.token)
	return http.DefaultClient.Do(req)
}

// Zoomer representerar en quiXzoom-användare (fältarbetare)
type Zoomer struct {
	ID             string    `json:"id"`
	Name           string    `json:"name"`
	Email          string    `json:"email"`
	Phone          string    `json:"phone"`
	Status         string    `json:"status"`
	Country        string    `json:"country"`
	City           string    `json:"city"`
	JoinedAt       time.Time `json:"joined_at"`
	LastActive     time.Time `json:"last_active"`
	TotalTasks     int       `json:"total_tasks"`
	CompletedTasks int       `json:"completed_tasks"`
	Rating         float64   `json:"rating"`
	Earnings       float64   `json:"earnings"`
	PayoutMethod   string    `json:"payout_method"`
	Verified       bool      `json:"verified"`
}

// FieldData representerar insamlad fältdata
type FieldData struct {
	ID          string                 `json:"id"`
	ZoomerID    string                 `json:"zoomer_id"`
	ZoomerName  string                 `json:"zoomer_name"`
	Type        string                 `json:"type"`
	Status      string                 `json:"status"`
	Location    Location               `json:"location"`
	Images      []Image                `json:"images"`
	Metadata    map[string]interface{} `json:"metadata"`
	CreatedAt   time.Time              `json:"created_at"`
	ProcessedAt *time.Time             `json:"processed_at,omitempty"`
	AIResult    *AIResult              `json:"ai_result,omitempty"`
}

// Location representerar en geografisk plats
type Location struct {
	Latitude  float64 `json:"lat"`
	Longitude float64 `json:"lng"`
	Address   string  `json:"address"`
	City      string  `json:"city"`
	Country   string  `json:"country"`
}

// Image representerar en bild
type Image struct {
	ID        string `json:"id"`
	URL       string `json:"url"`
	Thumbnail string `json:"thumbnail"`
	Status    string `json:"status"`
}

// AIResult representerar AI-analysresultat
type AIResult struct {
	Engine      string                 `json:"engine"`
	Confidence  float64                `json:"confidence"`
	Detections  []Detection            `json:"detections"`
	ProcessedAt time.Time              `json:"processed_at"`
	Metadata    map[string]interface{} `json:"metadata"`
}

// Detection representerar en AI-detektering
type Detection struct {
	Label       string  `json:"label"`
	Confidence  float64 `json:"confidence"`
	BoundingBox struct {
		X      float64 `json:"x"`
		Y      float64 `json:"y"`
		Width  float64 `json:"width"`
		Height float64 `json:"height"`
	} `json:"bounding_box"`
}

// Payout representerar en utbetalning
type Payout struct {
	ID          string     `json:"id"`
	ZoomerID    string     `json:"zoomer_id"`
	ZoomerName  string     `json:"zoomer_name"`
	Amount      float64    `json:"amount"`
	Currency    string     `json:"currency"`
	Status      string     `json:"status"`
	Method      string     `json:"method"`
	Period      string     `json:"period"`
	CreatedAt   time.Time  `json:"created_at"`
	ProcessedAt *time.Time `json:"processed_at,omitempty"`
	Tax         float64    `json:"tax"`
	Fee         float64    `json:"fee"`
	NetAmount   float64    `json:"net_amount"`
}

// GetZoomers returnerar alla zoomers
func (h *QuixzoomHandler) GetZoomers(w http.ResponseWriter, r *http.Request) {
	if !h.isConfigured() {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "quiXzoom API not configured. Set QUIXZOOM_API_URL and QUIXZOOM_API_TOKEN environment variables.",
		})
		return
	}

	resp, err := h.apiGet("/api/v1/zoomers")
	if err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": fmt.Sprintf("quiXzoom API error: %v", err),
		})
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(resp.StatusCode)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":     false,
			"error":  fmt.Sprintf("quiXzoom API returned %d", resp.StatusCode),
		})
		return
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "Failed to decode quiXzoom response",
		})
		return
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(result)
}

// GetZoomer returnerar en specifik zoomer
func (h *QuixzoomHandler) GetZoomer(w http.ResponseWriter, r *http.Request) {
	if !h.isConfigured() {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "quiXzoom API not configured. Set QUIXZOOM_API_URL and QUIXZOOM_API_TOKEN environment variables.",
		})
		return
	}

	zoomerID := chi.URLParam(r, "id")
	resp, err := h.apiGet("/api/v1/zoomers/" + zoomerID)
	if err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": fmt.Sprintf("quiXzoom API error: %v", err),
		})
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(resp.StatusCode)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":     false,
			"error":  fmt.Sprintf("quiXzoom API returned %d", resp.StatusCode),
		})
		return
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "Failed to decode quiXzoom response",
		})
		return
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(result)
}

// GetFieldData returnerar all fältdata
func (h *QuixzoomHandler) GetFieldData(w http.ResponseWriter, r *http.Request) {
	if !h.isConfigured() {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "quiXzoom API not configured. Set QUIXZOOM_API_URL and QUIXZOOM_API_TOKEN environment variables.",
		})
		return
	}

	resp, err := h.apiGet("/api/v1/field-data")
	if err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": fmt.Sprintf("quiXzoom API error: %v", err),
		})
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(resp.StatusCode)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":     false,
			"error":  fmt.Sprintf("quiXzoom API returned %d", resp.StatusCode),
		})
		return
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "Failed to decode quiXzoom response",
		})
		return
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(result)
}

// GetPayouts returnerar alla utbetalningar
func (h *QuixzoomHandler) GetPayouts(w http.ResponseWriter, r *http.Request) {
	if !h.isConfigured() {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "quiXzoom API not configured. Set QUIXZOOM_API_URL and QUIXZOOM_API_TOKEN environment variables.",
		})
		return
	}

	resp, err := h.apiGet("/api/v1/payouts")
	if err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": fmt.Sprintf("quiXzoom API error: %v", err),
		})
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(resp.StatusCode)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":     false,
			"error":  fmt.Sprintf("quiXzoom API returned %d", resp.StatusCode),
		})
		return
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "Failed to decode quiXzoom response",
		})
		return
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(result)
}

// GetPayoutStats returnerar utbetalningsstatistik
func (h *QuixzoomHandler) GetPayoutStats(w http.ResponseWriter, r *http.Request) {
	if !h.isConfigured() {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "quiXzoom API not configured. Set QUIXZOOM_API_URL and QUIXZOOM_API_TOKEN environment variables.",
		})
		return
	}

	resp, err := h.apiGet("/api/v1/payouts/stats")
	if err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": fmt.Sprintf("quiXzoom API error: %v", err),
		})
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(resp.StatusCode)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":     false,
			"error":  fmt.Sprintf("quiXzoom API returned %d", resp.StatusCode),
		})
		return
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "Failed to decode quiXzoom response",
		})
		return
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(result)
}

// GetInsights returnerar quiXzoom-insikter (Urban Intelligence Index)
func (h *QuixzoomHandler) GetInsights(w http.ResponseWriter, r *http.Request) {
	if !h.isConfigured() {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "quiXzoom API not configured. Set QUIXZOOM_API_URL and QUIXZOOM_API_TOKEN environment variables.",
		})
		return
	}

	resp, err := h.apiGet("/api/v1/insights")
	if err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": fmt.Sprintf("quiXzoom API error: %v", err),
		})
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(resp.StatusCode)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":     false,
			"error":  fmt.Sprintf("quiXzoom API returned %d", resp.StatusCode),
		})
		return
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusInternalServerError)
		json.NewEncoder(w).Encode(map[string]interface{}{
			"ok":    false,
			"error": "Failed to decode quiXzoom response",
		})
		return
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(result)
}

func timePtr(t time.Time) *time.Time {
	return &t
}