<?php

declare(strict_types=1);

namespace Core\Tenant\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\MorphTo;

/**
 * Workspace Activity - audit log for significant workspace actions.
 *
 * Tracks security events, membership changes, entitlement changes, and
 * other significant actions within a workspace.
 *
 * @property int $id
 * @property int $workspace_id
 * @property int|null $user_id
 * @property string $action
 * @property string|null $subject_type
 * @property int|null $subject_id
 * @property array|null $metadata
 * @property \Carbon\Carbon|null $created_at
 */
class WorkspaceActivity extends Model
{
    /**
     * Disable updated_at since this is an append-only audit log.
     */
    public const UPDATED_AT = null;

    protected $table = 'workspace_activities';

    protected $fillable = [
        'workspace_id',
        'user_id',
        'action',
        'subject_type',
        'subject_id',
        'metadata',
    ];

    protected $casts = [
        'metadata' => 'array',
    ];

    // ─────────────────────────────────────────────────────────────────────────
    // Action Constants — Workspace
    // ─────────────────────────────────────────────────────────────────────────

    public const ACTION_WORKSPACE_CREATED = 'workspace.created';

    public const ACTION_WORKSPACE_UPDATED = 'workspace.updated';

    public const ACTION_WORKSPACE_DELETED = 'workspace.deleted';

    public const ACTION_WORKSPACE_SETTINGS_CHANGED = 'workspace.settings_changed';

    // ─────────────────────────────────────────────────────────────────────────
    // Action Constants — Membership
    // ─────────────────────────────────────────────────────────────────────────

    public const ACTION_MEMBER_INVITED = 'member.invited';

    public const ACTION_MEMBER_JOINED = 'member.joined';

    public const ACTION_MEMBER_REMOVED = 'member.removed';

    public const ACTION_MEMBER_ROLE_CHANGED = 'member.role_changed';

    public const ACTION_MEMBER_TEAM_CHANGED = 'member.team_changed';

    // ─────────────────────────────────────────────────────────────────────────
    // Action Constants — Entitlements
    // ─────────────────────────────────────────────────────────────────────────

    public const ACTION_PACKAGE_ASSIGNED = 'package.assigned';

    public const ACTION_PACKAGE_REMOVED = 'package.removed';

    public const ACTION_BOOST_APPLIED = 'boost.applied';

    public const ACTION_BOOST_REMOVED = 'boost.removed';

    // ─────────────────────────────────────────────────────────────────────────
    // Action Constants — Security Events
    // ─────────────────────────────────────────────────────────────────────────

    public const ACTION_API_KEY_CREATED = 'api_key.created';

    public const ACTION_API_KEY_REVOKED = 'api_key.revoked';

    public const ACTION_WEBHOOK_CREATED = 'webhook.created';

    public const ACTION_WEBHOOK_DELETED = 'webhook.deleted';

    // ─────────────────────────────────────────────────────────────────────────
    // Relationships
    // ─────────────────────────────────────────────────────────────────────────

    /**
     * The workspace this activity belongs to.
     */
    public function workspace(): BelongsTo
    {
        return $this->belongsTo(Workspace::class);
    }

    /**
     * The user who performed this action.
     */
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    /**
     * The subject (polymorphic) of this activity.
     */
    public function subject(): MorphTo
    {
        return $this->morphTo();
    }

    // ─────────────────────────────────────────────────────────────────────────
    // Scopes
    // ─────────────────────────────────────────────────────────────────────────

    /**
     * Scope to a specific workspace.
     */
    public function scopeForWorkspace($query, Workspace|int $workspace)
    {
        $workspaceId = $workspace instanceof Workspace ? $workspace->id : $workspace;

        return $query->where('workspace_id', $workspaceId);
    }

    /**
     * Scope to a specific action.
     */
    public function scopeForAction($query, string $action)
    {
        return $query->where('action', $action);
    }

    /**
     * Scope to a specific action prefix (e.g. 'member.' matches all member actions).
     */
    public function scopeForActionGroup($query, string $prefix)
    {
        return $query->where('action', 'like', $prefix . '%');
    }

    /**
     * Scope to a specific subject.
     */
    public function scopeForSubject($query, Model $subject)
    {
        return $query
            ->where('subject_type', $subject->getMorphClass())
            ->where('subject_id', $subject->getKey());
    }

    /**
     * Scope to a specific user.
     */
    public function scopeByUser($query, User|int $user)
    {
        $userId = $user instanceof User ? $user->id : $user;

        return $query->where('user_id', $userId);
    }

    /**
     * Scope to activities within a date range.
     */
    public function scopeBetween($query, $from, $to)
    {
        return $query->whereBetween('created_at', [$from, $to]);
    }

    /**
     * Order by most recent first.
     */
    public function scopeLatestFirst($query)
    {
        return $query->orderByDesc('created_at');
    }

    // ─────────────────────────────────────────────────────────────────────────
    // Factory Methods
    // ─────────────────────────────────────────────────────────────────────────

    /**
     * Record a workspace activity.
     */
    public static function record(
        Workspace|int $workspace,
        string $action,
        ?Model $subject = null,
        ?User $user = null,
        ?array $metadata = null,
    ): self {
        $workspaceId = $workspace instanceof Workspace ? $workspace->id : $workspace;

        return self::create([
            'workspace_id' => $workspaceId,
            'user_id' => $user?->id ?? auth()->id(),
            'action' => $action,
            'subject_type' => $subject?->getMorphClass(),
            'subject_id' => $subject?->getKey(),
            'metadata' => $metadata,
        ]);
    }

    /**
     * Record a membership change.
     */
    public static function recordMembershipChange(
        Workspace|int $workspace,
        string $action,
        WorkspaceMember|User $subject,
        ?User $performedBy = null,
        ?array $metadata = null,
    ): self {
        return self::record($workspace, $action, $subject, $performedBy, $metadata);
    }

    /**
     * Record an entitlement change.
     */
    public static function recordEntitlementChange(
        Workspace|int $workspace,
        string $action,
        Model $subject,
        ?User $performedBy = null,
        ?array $metadata = null,
    ): self {
        return self::record($workspace, $action, $subject, $performedBy, $metadata);
    }

    /**
     * Record a security event.
     */
    public static function recordSecurityEvent(
        Workspace|int $workspace,
        string $action,
        ?Model $subject = null,
        ?User $performedBy = null,
        ?array $metadata = null,
    ): self {
        return self::record($workspace, $action, $subject, $performedBy, $metadata);
    }
}