package bootstrap

import (
	"context"
	"encoding/json"
	"log"
	"time"

	"github.com/google/uuid"

	"github.com/yuxingu/digital-psychology/apps/api/internal/model"
	"github.com/yuxingu/digital-psychology/apps/api/internal/portrait"
	releng "github.com/yuxingu/digital-psychology/apps/api/internal/relation"
	"github.com/yuxingu/digital-psychology/apps/api/internal/repository"
	"github.com/yuxingu/digital-psychology/apps/api/internal/rhythm"
	"github.com/yuxingu/digital-psychology/apps/api/internal/star"
	"github.com/yuxingu/digital-psychology/apps/api/internal/star/synastry"
)

// Service generates birthday-derived report bundles for a profile.
type Service struct {
	Profiles  *repository.ProfileRepo
	Reports   *repository.ReportRepo
	Relations *repository.RelationRepo
}

// GenerateForProfile rebuilds solo reports for p and pair reports with counterparts.
func (s *Service) GenerateForProfile(ctx context.Context, userID uuid.UUID, p *model.Profile) {
	if p == nil {
		return
	}
	s.genSolo(ctx, userID, p)
	list, err := s.Profiles.ListByUser(ctx, userID)
	if err != nil {
		log.Printf("bootstrap list profiles: %v", err)
		return
	}
	var self *model.Profile
	others := make([]*model.Profile, 0)
	for i := range list {
		item := list[i]
		if item.Relation == "self" {
			cp := item
			self = &cp
		} else if item.Relation == "other" {
			cp := item
			others = append(others, &cp)
		}
	}
	if self == nil {
		return
	}
	if p.Relation == "self" {
		for _, o := range others {
			s.genPair(ctx, userID, self, o)
		}
		return
	}
	s.genPair(ctx, userID, self, p)
}

func (s *Service) genSolo(ctx context.Context, userID uuid.UUID, p *model.Profile) {
	outP := portrait.Build(p.BirthDate, p.DisplayName)
	sum, _ := json.Marshal(outP.Summary)
	det, _ := json.Marshal(outP.Detail)
	if _, err := s.Reports.UpsertWithPeer(ctx, userID, p.ID, nil, "portrait", sum, det); err != nil {
		log.Printf("bootstrap portrait: %v", err)
	}

	now := time.Now().In(time.FixedZone("CST", 8*3600))
	outS, err := star.BuildWith(star.BuildOpts{
		Birth: p.BirthDate, BirthTime: p.BirthTime, BirthPlace: p.BirthPlace, Name: p.DisplayName,
		AsOf: now,
	})
	if err != nil {
		log.Printf("bootstrap star: %v", err)
	} else {
		sum, _ = json.Marshal(outS.Summary)
		det, _ = json.Marshal(outS.Detail)
		if _, err := s.Reports.UpsertWithPeer(ctx, userID, p.ID, nil, "star", sum, det); err != nil {
			log.Printf("bootstrap star save: %v", err)
		}
	}

	outR := rhythm.BuildWith(p.BirthDate, p.DisplayName, now)
	sum, _ = json.Marshal(outR.Summary)
	det, _ = json.Marshal(outR.Detail)
	if _, err := s.Reports.UpsertWithPeer(ctx, userID, p.ID, nil, "rhythm", sum, det); err != nil {
		log.Printf("bootstrap rhythm: %v", err)
	}
}

func (s *Service) genPair(ctx context.Context, userID uuid.UUID, self, other *model.Profile) {
	if self == nil || other == nil || self.ID == other.ID {
		return
	}
	peer := other.ID
	relType := ""
	if other.RelationType != nil {
		relType = *other.RelationType
	}
	rel := releng.BuildFull(self.BirthDate, other.BirthDate, self.BirthTime, other.BirthTime, self.BirthPlace, other.BirthPlace, self.DisplayName, other.DisplayName, relType)
	sum, _ := json.Marshal(rel.Summary)
	det, _ := json.Marshal(rel.Detail)
	rep, err := s.Reports.UpsertWithPeer(ctx, userID, self.ID, &peer, "relation", sum, det)
	if err != nil {
		log.Printf("bootstrap relation: %v", err)
	} else if s.Relations != nil {
		_, _ = s.Relations.Create(ctx, userID, self.ID, other.ID, sum, rep.ID)
	}

	ca, err := star.NatalChart(self.BirthDate, self.BirthTime, self.BirthPlace)
	if err != nil {
		log.Printf("bootstrap synastry natal a: %v", err)
		return
	}
	cb, err := star.NatalChart(other.BirthDate, other.BirthTime, other.BirthPlace)
	if err != nil {
		log.Printf("bootstrap synastry natal b: %v", err)
		return
	}
	when := time.Now().In(time.FixedZone("CST", 8*3600))
	out, err := synastry.BuildReport(ca, cb, self.DisplayName, other.DisplayName, when)
	if err != nil {
		log.Printf("bootstrap synastry: %v", err)
		return
	}
	sum, _ = json.Marshal(out.Summary)
	det, _ = json.Marshal(out.Detail)
	if _, err := s.Reports.UpsertWithPeer(ctx, userID, self.ID, &peer, "synastry", sum, det); err != nil {
		log.Printf("bootstrap synastry save: %v", err)
	}
}