// Copyright (c) Abstract Machines
// SPDX-License-Identifier: Apache-2.0

//go:build !test

package middleware

import (
	"context"
	"log/slog"
	"time"

	"github.com/absmach/supermq/auth"
	"github.com/absmach/supermq/pkg/policies"
)

var _ auth.Service = (*loggingMiddleware)(nil)

type loggingMiddleware struct {
	logger *slog.Logger
	svc    auth.Service
}

// NewLogging adds logging facilities to the core service.
func NewLogging(svc auth.Service, logger *slog.Logger) auth.Service {
	return &loggingMiddleware{logger, svc}
}

func (lm *loggingMiddleware) Issue(ctx context.Context, token string, key auth.Key) (tkn auth.Token, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.Group("key",
				slog.String("subject", key.Subject),
				slog.Any("type", key.Type),
			),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Issue key failed", args...)
			return
		}
		lm.logger.Info("Issue key completed successfully", args...)
	}(time.Now())

	return lm.svc.Issue(ctx, token, key)
}

func (lm *loggingMiddleware) Revoke(ctx context.Context, token, id string) (err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("key_id", id),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Revoke key failed", args...)
			return
		}
		lm.logger.Info("Revoke key completed successfully", args...)
	}(time.Now())

	return lm.svc.Revoke(ctx, token, id)
}

func (lm *loggingMiddleware) RetrieveKey(ctx context.Context, token, id string) (key auth.Key, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("key_id", id),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Retrieve key failed", args...)
			return
		}
		lm.logger.Info("Retrieve key completed successfully", args...)
	}(time.Now())

	return lm.svc.RetrieveKey(ctx, token, id)
}

func (lm *loggingMiddleware) Identify(ctx context.Context, token string) (id auth.Key, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.Group("key",
				slog.String("subject", id.Subject),
				slog.Any("type", id.Type),
			),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Identify key failed", args...)
			return
		}
		lm.logger.Info("Identify key completed successfully", args...)
	}(time.Now())

	return lm.svc.Identify(ctx, token)
}

func (lm *loggingMiddleware) Authorize(ctx context.Context, pr policies.Policy) (err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.Group("object",
				slog.String("id", pr.Object),
				slog.String("type", pr.ObjectType),
			),
			slog.Group("subject",
				slog.String("id", pr.Subject),
				slog.String("kind", pr.SubjectKind),
				slog.String("type", pr.SubjectType),
			),
			slog.String("permission", pr.Permission),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Authorize failed", args...)
			return
		}
		lm.logger.Info("Authorize completed successfully", args...)
	}(time.Now())
	return lm.svc.Authorize(ctx, pr)
}

func (lm *loggingMiddleware) CreatePAT(ctx context.Context, token, name, description string, duration time.Duration) (pa auth.PAT, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("name", name),
			slog.String("description", description),
			slog.String("pat_duration", duration.String()),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Create PAT failed", args...)
			return
		}
		lm.logger.Info("Create PAT completed successfully", args...)
	}(time.Now())
	return lm.svc.CreatePAT(ctx, token, name, description, duration)
}

func (lm *loggingMiddleware) UpdatePATName(ctx context.Context, token, patID, name string) (pa auth.PAT, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
			slog.String("name", name),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Update PAT name failed", args...)
			return
		}
		lm.logger.Info("Update PAT name completed successfully", args...)
	}(time.Now())
	return lm.svc.UpdatePATName(ctx, token, patID, name)
}

func (lm *loggingMiddleware) UpdatePATDescription(ctx context.Context, token, patID, description string) (pa auth.PAT, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
			slog.String("description", description),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Update PAT description failed", args...)
			return
		}
		lm.logger.Info("Update PAT description completed successfully", args...)
	}(time.Now())
	return lm.svc.UpdatePATDescription(ctx, token, patID, description)
}

func (lm *loggingMiddleware) RetrievePAT(ctx context.Context, token, patID string) (pa auth.PAT, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Retrieve PAT  failed", args...)
			return
		}
		lm.logger.Info("Retrieve PAT completed successfully", args...)
	}(time.Now())
	return lm.svc.RetrievePAT(ctx, token, patID)
}

func (lm *loggingMiddleware) ListPATS(ctx context.Context, token string, pm auth.PATSPageMeta) (pp auth.PATSPage, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.Uint64("limit", pm.Limit),
			slog.Uint64("offset", pm.Offset),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("List PATS  failed", args...)
			return
		}
		lm.logger.Info("List PATS completed successfully", args...)
	}(time.Now())
	return lm.svc.ListPATS(ctx, token, pm)
}

func (lm *loggingMiddleware) ListScopes(ctx context.Context, token string, pm auth.ScopesPageMeta) (pp auth.ScopesPage, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.Uint64("limit", pm.Limit),
			slog.Uint64("offset", pm.Offset),
			slog.String("pat_id", pm.PatID),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("List Scopes  failed", args...)
			return
		}
		lm.logger.Info("List Scopes completed successfully", args...)
	}(time.Now())
	return lm.svc.ListScopes(ctx, token, pm)
}

func (lm *loggingMiddleware) DeletePAT(ctx context.Context, token, patID string) (err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Delete PAT  failed", args...)
			return
		}
		lm.logger.Info("Delete PAT completed successfully", args...)
	}(time.Now())
	return lm.svc.DeletePAT(ctx, token, patID)
}

func (lm *loggingMiddleware) ResetPATSecret(ctx context.Context, token, patID string, duration time.Duration) (pa auth.PAT, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
			slog.String("pat_duration", duration.String()),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Reset PAT secret failed", args...)
			return
		}
		lm.logger.Info("Reset PAT secret completed successfully", args...)
	}(time.Now())
	return lm.svc.ResetPATSecret(ctx, token, patID, duration)
}

func (lm *loggingMiddleware) RevokePATSecret(ctx context.Context, token, patID string) (err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Revoke PAT secret failed", args...)
			return
		}
		lm.logger.Info("Revoke PAT secret completed successfully", args...)
	}(time.Now())
	return lm.svc.RevokePATSecret(ctx, token, patID)
}

func (lm *loggingMiddleware) RemoveAllPAT(ctx context.Context, token string) (err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Remove all PAT failed", args...)
			return
		}
		lm.logger.Info("Remove all of PAT completed successfully", args...)
	}(time.Now())
	return lm.svc.RemoveAllPAT(ctx, token)
}

func (lm *loggingMiddleware) AddScope(ctx context.Context, token, patID string, scopes []auth.Scope) (err error) {
	defer func(begin time.Time) {
		var groupArgs []any
		for _, s := range scopes {
			groupArgs = append(groupArgs, slog.String("entity_type", s.EntityType.String()))
			groupArgs = append(groupArgs, slog.String("optional_domain_id", s.OptionalDomainID))
			groupArgs = append(groupArgs, slog.String("operation", s.Operation.String()))
			groupArgs = append(groupArgs, slog.String("entity_id", s.EntityID))
		}

		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
			slog.Group("scope", groupArgs...),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Add PAT scope failed", args...)
			return
		}
		lm.logger.Info("Add PAT scope completed successfully", args...)
	}(time.Now())
	return lm.svc.AddScope(ctx, token, patID, scopes)
}

func (lm *loggingMiddleware) RemoveScope(ctx context.Context, token, patID string, scopesID ...string) (err error) {
	defer func(begin time.Time) {
		var groupArgs []any
		for _, s := range scopesID {
			groupArgs = append(groupArgs, slog.String("scope_id", s))
		}
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
			slog.Group("scope", groupArgs...),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Remove entry from PAT scope failed", args...)
			return
		}
		lm.logger.Info("Remove entry from PAT scope completed successfully", args...)
	}(time.Now())
	return lm.svc.RemoveScope(ctx, token, patID, scopesID...)
}

func (lm *loggingMiddleware) RemovePATAllScope(ctx context.Context, token, patID string) (err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("pat_id", patID),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Remove all scopes from PAT failed", args...)
			return
		}
		lm.logger.Info("Remove all scopes from PAT completed successfully", args...)
	}(time.Now())
	return lm.svc.RemovePATAllScope(ctx, token, patID)
}

func (lm *loggingMiddleware) IdentifyPAT(ctx context.Context, paToken string) (pa auth.PAT, err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Identify PAT failed", args...)
			return
		}
		lm.logger.Info("Identify PAT completed successfully", args...)
	}(time.Now())
	return lm.svc.IdentifyPAT(ctx, paToken)
}

func (lm *loggingMiddleware) AuthorizePAT(ctx context.Context, userID, patID string, entityType auth.EntityType, optionalDomainID string, operation auth.Operation, entityID string) (err error) {
	defer func(begin time.Time) {
		args := []any{
			slog.String("duration", time.Since(begin).String()),
			slog.String("entity_type", entityType.String()),
			slog.String("optional_domain_id", optionalDomainID),
			slog.String("operation", operation.String()),
			slog.String("entities", entityID),
		}
		if err != nil {
			args = append(args, slog.String("error", err.Error()))
			lm.logger.Warn("Authorize PAT failed complete successfully", args...)
			return
		}
		lm.logger.Info("Authorize PAT completed successfully", args...)
	}(time.Now())
	return lm.svc.AuthorizePAT(ctx, userID, patID, entityType, optionalDomainID, operation, entityID)
}
