package routes

import (
	"context"
	"encoding/json"
	"strconv"

	"go-eve-pi/esi"
	"go-eve-pi/types"
	wh "go-eve-pi/webhook"

	logger "git.site.quack-lab.dev/dave/cylogger"
	"github.com/fasthttp/router"
	"github.com/valyala/fasthttp"
)

// RouteHandler contains dependencies needed for route handlers
type RouteHandler struct {
	SSO     SSOInterface
	Webhook wh.Webhook
	ESI     esi.ESIInterface
}

// SSOInterface defines the interface for SSO operations
type SSOInterface interface {
	GetCharacter(ctx context.Context, characterName string) (types.Character, error)
}

// NewRouteHandler creates a new route handler with dependencies
func NewRouteHandler(sso SSOInterface, webhook wh.Webhook, esi esi.ESIInterface) *RouteHandler {
	return &RouteHandler{
		SSO:     sso,
		Webhook: webhook,
		ESI:     esi,
	}
}

// SetupRoutes configures all routes on the given router
func (rh *RouteHandler) SetupRoutes(r *router.Router) {
	// Root route
	r.GET("/", rh.handleRoot)

	// Authentication route
	r.GET("/login/{character}", rh.handleLogin)

	// Planet routes
	r.GET("/planets/{character}", rh.handlePlanets)
	r.GET("/planet/{character}/{planet_id}", rh.handlePlanetDetails)
	r.GET("/planets-full/{character}", rh.handlePlanetsFull)
}

// handleRoot handles the root endpoint
func (rh *RouteHandler) handleRoot(ctx *fasthttp.RequestCtx) {
	ctx.SetStatusCode(fasthttp.StatusOK)
	ctx.WriteString("EVE PI Server Running")
}

// handleLogin handles character authentication
func (rh *RouteHandler) handleLogin(ctx *fasthttp.RequestCtx) {
	charName := ctx.UserValue("character")
	charNameStr, ok := charName.(string)
	if !ok || charNameStr == "" {
		ctx.SetStatusCode(fasthttp.StatusBadRequest)
		ctx.WriteString("Missing character parameter")
		return
	}
	logger.Info("Login requested for character %s", charNameStr)

	// Trigger the auth flow (will register callback if needed)
	char, err := rh.SSO.GetCharacter(context.Background(), charNameStr)
	if err != nil {
		logger.Error("Failed to authenticate character %s: %v", charNameStr, err)
		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
		ctx.WriteString("Authentication failed")
		return
	}
	logger.Info("Successfully authenticated character %s", charNameStr)
	ctx.SetContentType("text/plain")
	ctx.SetStatusCode(fasthttp.StatusOK)
	ctx.WriteString("Authenticated! Access token: " + char.AccessToken)
}

// handlePlanets handles fetching planets for a character
func (rh *RouteHandler) handlePlanets(ctx *fasthttp.RequestCtx) {
	charName := ctx.UserValue("character")
	charNameStr, ok := charName.(string)
	if !ok || charNameStr == "" {
		ctx.SetStatusCode(fasthttp.StatusBadRequest)
		ctx.WriteString("Missing character parameter")
		return
	}

	logger.Info("Fetching planets for character %s", charNameStr)

	// Get access token for character
	char, err := rh.SSO.GetCharacter(context.Background(), charNameStr)
	if err != nil {
		logger.Error("Failed to get token for character %s: %v", charNameStr, err)
		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
		ctx.WriteString("Authentication failed")
		return
	}

	// Fetch planets using ESI API
	planets, err := rh.ESI.GetCharacterPlanets(context.Background(), int(char.ID), char.AccessToken)
	if err != nil {
		logger.Error("Failed to fetch planets for character %s: %v", charNameStr, err)
		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
		ctx.WriteString("Failed to fetch planets")
		return
	}

	// Return planets as JSON
	ctx.SetContentType("application/json")
	ctx.SetStatusCode(fasthttp.StatusOK)
	json.NewEncoder(ctx).Encode(planets)
}

// handlePlanetDetails handles fetching detailed planet information
func (rh *RouteHandler) handlePlanetDetails(ctx *fasthttp.RequestCtx) {
	charName := ctx.UserValue("character")
	charNameStr, ok := charName.(string)
	if !ok || charNameStr == "" {
		ctx.SetStatusCode(fasthttp.StatusBadRequest)
		ctx.WriteString("Missing character parameter")
		return
	}

	planetIDStr := ctx.UserValue("planet_id")
	planetID, err := strconv.Atoi(planetIDStr.(string))
	if err != nil {
		ctx.SetStatusCode(fasthttp.StatusBadRequest)
		ctx.WriteString("Invalid planet ID")
		return
	}

	logger.Info("Fetching planet details for character %s, planet %d", charNameStr, planetID)

	// Get access token for character
	char, err := rh.SSO.GetCharacter(context.Background(), charNameStr)
	if err != nil {
		logger.Error("Failed to get token for character %s: %v", charNameStr, err)
		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
		ctx.WriteString("Authentication failed")
		return
	}

	// Fetch planet details using ESI API
	planetDetail, err := rh.ESI.GetPlanetDetails(context.Background(), int(char.ID), planetID, char.AccessToken)
	if err != nil {
		logger.Error("Failed to fetch planet details for character %s, planet %d: %v", charNameStr, planetID, err)
		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
		ctx.WriteString("Failed to fetch planet details")
		return
	}

	// Return planet details as JSON
	ctx.SetContentType("application/json")
	ctx.SetStatusCode(fasthttp.StatusOK)
	json.NewEncoder(ctx).Encode(planetDetail)
}

// handlePlanetsFull handles fetching all planets with their details for a character
func (rh *RouteHandler) handlePlanetsFull(ctx *fasthttp.RequestCtx) {
	charName := ctx.UserValue("character")
	charNameStr, ok := charName.(string)
	if !ok || charNameStr == "" {
		ctx.SetStatusCode(fasthttp.StatusBadRequest)
		ctx.WriteString("Missing character parameter")
		return
	}

	logger.Info("Fetching full planet data for character %s", charNameStr)

	// Get access token for character
	char, err := rh.SSO.GetCharacter(context.Background(), charNameStr)
	if err != nil {
		logger.Error("Failed to get token for character %s: %v", charNameStr, err)
		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
		ctx.WriteString("Authentication failed")
		return
	}

	// Fetch planets list
	planets, err := rh.ESI.GetCharacterPlanets(context.Background(), int(char.ID), char.AccessToken)
	if err != nil {
		logger.Error("Failed to fetch planets for character %s: %v", charNameStr, err)
		ctx.SetStatusCode(fasthttp.StatusInternalServerError)
		ctx.WriteString("Failed to fetch planets")
		return
	}

	// Fetch details for each planet
	type PlanetWithDetails struct {
		Planet  esi.Planet
		Details *esi.PlanetDetail
	}

	var planetsWithDetails []PlanetWithDetails
	for _, planet := range planets {
		details, err := rh.ESI.GetPlanetDetails(context.Background(), int(char.ID), planet.PlanetID, char.AccessToken)
		if err != nil {
			logger.Warning("Failed to fetch details for planet %d: %v", planet.PlanetID, err)
			// Continue with other planets even if one fails
			details = nil
		}

		planetsWithDetails = append(planetsWithDetails, PlanetWithDetails{
			Planet:  planet,
			Details: details,
		})
	}

	// Return planets with details as JSON
	ctx.SetContentType("application/json")
	ctx.SetStatusCode(fasthttp.StatusOK)
	json.NewEncoder(ctx).Encode(planetsWithDetails)
}