package mod

import (
	"net/http"

	"codeberg.org/pronounscc/pronouns.cc/backend/db"
	"codeberg.org/pronounscc/pronouns.cc/backend/log"
	"codeberg.org/pronounscc/pronouns.cc/backend/server"
	"emperror.dev/errors"
	"github.com/go-chi/chi/v5"
	"github.com/go-chi/render"
	"github.com/rs/xid"
)

const MaxReasonLength = 2000

type CreateReportRequest struct {
	Reason string `json:"reason"`
}

func (s *Server) createUserReport(w http.ResponseWriter, r *http.Request) error {
	ctx := r.Context()
	claims, _ := server.ClaimsFromContext(ctx)

	if !claims.TokenWrite {
		return server.APIError{Code: server.ErrMissingPermissions, Details: "This token is read-only"}
	}

	userID, err := xid.FromString(chi.URLParam(r, "id"))
	if err != nil {
		return server.APIError{Code: server.ErrBadRequest, Details: "Invalid user ID"}
	}

	u, err := s.DB.User(ctx, userID)
	if err != nil {
		if err == db.ErrUserNotFound {
			return server.APIError{Code: server.ErrUserNotFound}
		}

		log.Errorf("getting user %v: %v", userID, err)
		return errors.Wrap(err, "getting user")
	}

	if u.DeletedAt != nil {
		return server.APIError{Code: server.ErrUserNotFound}
	}

	var req CreateReportRequest
	err = render.Decode(r, &req)
	if err != nil {
		return server.APIError{Code: server.ErrBadRequest}
	}

	if len(req.Reason) > MaxReasonLength {
		return server.APIError{Code: server.ErrBadRequest, Details: "Reason cannot exceed 2000 characters"}
	}

	_, err = s.DB.CreateReport(ctx, claims.UserID, u.ID, nil, req.Reason)
	if err != nil {
		log.Errorf("creating report for %v: %v", u.ID, err)
		return errors.Wrap(err, "creating report")
	}

	render.NoContent(w, r)
	return nil
}

func (s *Server) createMemberReport(w http.ResponseWriter, r *http.Request) error {
	ctx := r.Context()
	claims, _ := server.ClaimsFromContext(ctx)

	if !claims.TokenWrite {
		return server.APIError{Code: server.ErrMissingPermissions, Details: "This token is read-only"}
	}

	memberID, err := xid.FromString(chi.URLParam(r, "id"))
	if err != nil {
		return server.APIError{Code: server.ErrBadRequest, Details: "Invalid member ID"}
	}

	m, err := s.DB.Member(ctx, memberID)
	if err != nil {
		if err == db.ErrMemberNotFound {
			return server.APIError{Code: server.ErrMemberNotFound}
		}

		log.Errorf("getting member %v: %v", memberID, err)
		return errors.Wrap(err, "getting member")
	}

	u, err := s.DB.User(ctx, m.UserID)
	if err != nil {
		log.Errorf("getting user %v: %v", m.UserID, err)
		return errors.Wrap(err, "getting user")
	}

	if u.DeletedAt != nil {
		return server.APIError{Code: server.ErrMemberNotFound}
	}

	var req CreateReportRequest
	err = render.Decode(r, &req)
	if err != nil {
		return server.APIError{Code: server.ErrBadRequest}
	}

	if len(req.Reason) > MaxReasonLength {
		return server.APIError{Code: server.ErrBadRequest, Details: "Reason cannot exceed 2000 characters"}
	}

	_, err = s.DB.CreateReport(ctx, claims.UserID, u.ID, &m.ID, req.Reason)
	if err != nil {
		log.Errorf("creating report for %v: %v", m.ID, err)
		return errors.Wrap(err, "creating report")
	}

	render.NoContent(w, r)
	return nil
}