package admin

import (
	"net/http"

	"codeberg.org/pronounscc/pronouns.cc/backend/common"
	"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/render"
)

type AuditLogEntryResponse struct {
	ID             common.AuditLogID `json:"id"`
	TargetUserID   common.UserID     `json:"target_user_id"`
	TargetMemberID *common.MemberID  `json:"target_member_id"`
	ModeratorID    common.UserID     `json:"moderator_id"`
	ReportID       *int64            `json:"report_id"`

	Reason      string                  `json:"reason"`
	ActionTaken string                  `json:"action_taken"`
	ClearedData *db.AuditLogClearedData `json:"cleared_data"`
}

func dbAuditLogToResponse(e db.AuditLogEntry) AuditLogEntryResponse {
	return AuditLogEntryResponse{
		ID:             e.ID,
		TargetUserID:   e.TargetUserID,
		TargetMemberID: e.TargetMemberID,
		ModeratorID:    e.ModeratorID,
		ReportID:       e.ReportID,
		Reason:         e.Reason,
		ActionTaken:    e.ActionTaken,
		ClearedData:    e.ClearedData,
	}
}

func dbAuditLogsToResponse(es []db.AuditLogEntry) []AuditLogEntryResponse {
	resps := make([]AuditLogEntryResponse, len(es))
	for i := range es {
		resps[i] = dbAuditLogToResponse(es[i])
	}
	return resps
}

func (s *Server) AuditLog(w http.ResponseWriter, r *http.Request) (err error) {
	beforeID := common.AuditLogID(0)
	if s := r.FormValue("before"); s != "" {
		sf, err := common.ParseSnowflake(s)
		if err != nil {
			return server.NewV2Error(server.ErrBadRequest, "", server.NewModelParseError("query", "Invalid snowflake"))
		}
		beforeID = common.AuditLogID(sf)
	}

	es, err := s.DB.AuditLog(r.Context(), beforeID)
	if err != nil {
		log.Errorf("getting audit logs before %v: %v", beforeID, err)
		return errors.Wrap(err, "getting audit logs")
	}

	render.JSON(w, r, dbAuditLogsToResponse(es))
	return nil
}