// Package httpserver wires HTTP routes for the 愈心谷 API.
package httpserver

import (
	"context"
	"log"

	"github.com/gin-gonic/gin"
	"github.com/jackc/pgx/v5/pgxpool"

	"github.com/yuxingu/digital-psychology/apps/api/internal/config"
	"github.com/yuxingu/digital-psychology/apps/api/internal/handler"
	"github.com/yuxingu/digital-psychology/apps/api/internal/llm/deepseek"
	"github.com/yuxingu/digital-psychology/apps/api/internal/middleware"
	"github.com/yuxingu/digital-psychology/apps/api/internal/repository"
	adminsvc "github.com/yuxingu/digital-psychology/apps/api/internal/service/admin"
	analyticssvc "github.com/yuxingu/digital-psychology/apps/api/internal/service/analytics"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/ask"
	authsvc "github.com/yuxingu/digital-psychology/apps/api/internal/service/auth"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/bootstrap"
	companionsvc "github.com/yuxingu/digital-psychology/apps/api/internal/service/companion"
	homesvc "github.com/yuxingu/digital-psychology/apps/api/internal/service/home"
	imagecardsvc "github.com/yuxingu/digital-psychology/apps/api/internal/service/imagecard"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/membership"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/profile"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/relation"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/report"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/scale"
	"github.com/yuxingu/digital-psychology/apps/api/pkg/response"
)

// NewRouter builds the Gin engine with all /api/v1 routes.
func NewRouter(pool *pgxpool.Pool, cfg config.Config) *gin.Engine {
	profileRepo := &repository.ProfileRepo{Pool: pool}
	reportRepo := &repository.ReportRepo{Pool: pool}
	relationRepo := &repository.RelationRepo{Pool: pool}
	askRepo := &repository.AskRepo{Pool: pool}
	adminRepo := &repository.AdminRepo{Pool: pool}
	analyticsRepo := &repository.AnalyticsRepo{Pool: pool}
	authRepo := &repository.AuthRepo{Pool: pool}

	var llm *deepseek.Client
	if cfg.DeepSeek.Enabled() {
		llm = deepseek.New(cfg.DeepSeek)
	}

	bootSvc := &bootstrap.Service{Profiles: profileRepo, Reports: reportRepo, Relations: relationRepo}
	profileSvc := &profile.Service{Repo: profileRepo, Reports: reportRepo, Bootstrap: bootSvc}
	reportSvc := &report.Service{
		Profiles: profileRepo,
		Reports:  reportRepo,
		Invites:  &repository.SynastryInviteRepo{Pool: pool},
	}
	membershipSvc := &membership.Service{Reports: reportRepo}
	relationSvc := &relation.Service{Profiles: profileRepo, Reports: reportRepo, Relations: relationRepo}
	scaleRepo := &repository.ScaleRepo{Pool: pool}
	scaleSvc := &scale.Service{Repo: scaleRepo, Profiles: profileRepo, Membership: membershipSvc}
	askSvc := &ask.Service{Profiles: profileRepo, Reports: reportRepo, Ask: askRepo, LLM: llm}
	companionSvc := &companionsvc.Service{Moods: &repository.MoodRepo{Pool: pool}}
	imageCardSvc := &imagecardsvc.Service{
		Profiles: profileRepo,
		Reports:  reportRepo,
		Quotas:   &repository.ImageCardRepo{Pool: pool},
	}
	homeSvc := &homesvc.Service{
		Repo:     &repository.HomeToolsRepo{Pool: pool},
		Tips:     &repository.HomeDailyTipsRepo{Pool: pool},
		Profiles: profileRepo,
		CMS:      adminRepo,
		LLM:      llm,
	}
	analyticsSvc := &analyticssvc.Service{Repo: analyticsRepo}
	adminSvc := &adminsvc.Service{
		Repo: adminRepo, Reports: reportRepo, Home: homeSvc, Scales: scaleRepo,
	}
	authSvc := &authsvc.Service{Repo: authRepo, AvatarDir: "data/avatars"}
	if err := adminSvc.EnsureBootstrap(context.Background(), adminsvc.BootstrapConfig{
		Username: cfg.Admin.BootstrapUsername,
		Password: cfg.Admin.BootstrapPassword,
	}); err != nil {
		log.Printf("admin bootstrap failed: %v", err)
	}

	r := gin.New()
	r.Use(gin.Recovery(), gin.Logger(), middleware.RequestID())
	r.Use(func(c *gin.Context) {
		c.Header("Access-Control-Expose-Headers", "X-Device-Key, X-Request-Id")
		c.Next()
	})

	api := r.Group("/api/v1")
	handler.NewHealthHandler().Register(api)
	api.GET("/ping", func(c *gin.Context) {
		response.OK(c, gin.H{"pong": true})
	})
	(&handler.MediaHandler{AvatarDir: "data/avatars"}).Register(api)
	(&handler.AdminHandler{Svc: adminSvc, Analytics: analyticsSvc}).Register(api)

	authed := api.Group("")
	authed.Use(middleware.DeviceAuth(pool))
	(&handler.AuthHandler{Svc: authSvc}).Register(authed)
	(&handler.AnalyticsHandler{Svc: analyticsSvc}).Register(authed)
	(&handler.HomeHandler{Svc: homeSvc}).Register(authed)

	gated := authed.Group("")
	gated.Use(middleware.RequireRegistered(pool))
	(&handler.ProfileHandler{Svc: profileSvc}).Register(gated)
	(&handler.ReportHandler{Svc: reportSvc, Membership: membershipSvc}).Register(gated)
	(&handler.SynastryHandler{Svc: reportSvc}).Register(gated)
	(&handler.RelationHandler{Svc: relationSvc}).Register(gated)
	(&handler.ScaleHandler{Svc: scaleSvc}).Register(gated)
	(&handler.AskHandler{Svc: askSvc}).Register(gated)
	(&handler.CompanionHandler{Svc: companionSvc}).Register(gated)
	(&handler.ImageCardHandler{Svc: imageCardSvc}).Register(gated)
	(&handler.ExploreHandler{Scales: scaleSvc}).Register(gated)
	(&handler.GrowthHandler{
		Plans: &repository.GrowthRepo{Pool: pool},
	}).Register(gated)

	return r
}