feature/simplify ucan mpc did (#1195)

* feat: enable DID auth middleware

* feat: implement passkey creation flow

* feat: persist user address in cookie and retrieve user profile using address cookie

* feat: implement human verification challenge during session initialization

* refactor: remove unnecessary random number generation in profile creation

* refactor: rename credential validation handler and update related routes

* feat: improve profile validation and user experience

* feat: add page rendering for profile and passkey creation

* refactor: remove unused register handler and update routes

* refactor: remove unused imports and simplify credential validation

* fix: Correct insecure gRPC client connection

* refactor: rename models files for better organization

* refactor: refactor grpc client creation and management

* refactor: refactor common clients package

* <no value>

* feat: add CapAccount, CapInterchain, CapVault enums

* feat: add ChainId to ResAccount and ResInterchain

* feat: add asset code to resource account enumeration

* refactor: rename services package to providers

* feat: implement gateway database interactions

* refactor: move gateway repository to internal/gateway

* refactor: Migrate database provider to use sqlx

* refactor: Rename Vaults to VaultProvider in HTTPContext struct

* refactor: Migrate from GORM to sqlc Queries in database context methods

* refactor: Replace GORM with standard SQL and simplify database initialization

* refactor: Migrate session management from GORM to sqlc with type conversion

* refactor: Update import paths and model references in context package

* fix: Resolve session type conversion and middleware issues

* refactor: Migrate database from GORM to sqlx

* refactor: Move models to pkg/common, improve code structure

* refactor: move repository package to internal directory

* refactor: move gateway internal packages to context directory

* refactor: migrate database provider to use sqlx queries

* feat: add session ID to HTTP context and use it to load session data

* feat: implement vault creation API endpoint

* feat: add DIDKey generation from PubKey

* refactor: remove unused DIDAuth components

* refactor: move DID auth controller to vault context

* chore: remove unused DIDAuth package

* refactor: improve clarity of enclave refresh function

* feat: implement nonce-based key encryption for improved security

* feat: Add Export and Import methods with comprehensive tests for Enclave

* fix: Validate AES key length in keyshare encryption and decryption

* fix: Resolve key length validation by hashing input keys

* refactor: Update keyshare import to use protocol decoding

* feat: Refactor enclave encryption to support full enclave export/import

* refactor: Simplify Enclave interface methods by removing role parameter

* refactor: remove unnecessary serialization from enclave interface

* refactor: rename models package in gateway context

* refactor: rename keystore vault constants

* refactor: remove context parameter from Resolver methods

* feat: add CurrentBlock context function and update related components

* refactor: rename resolver.go to resolvers.go

* feat: Add SQLite random() generation for session and profile initialization

* refactor: Update SQL queries to use SQLite-style parameter placeholders

* refactor: Replace '?' placeholders with '$n' PostgreSQL parameter syntax

* <no value>

* refactor: refactor gateway to use middleware for database interactions and improve modularity

* feat: implement gateway for Sonr highway

* refactor: Remove unused gateway context and refactor cookie/header handling

* refactor: improve server initialization and middleware handling

* feat: implement human verification for profile creation

* feat: implement session management middleware

* refactor: refactor common models and config to internal package

* refactor: move env config to internal/config

* refactor: move database-related code to  directory

* refactor: move IPFS client to common package and improve code structure

* refactor: move querier to common package and rename to chain_query

* refactor: move webworker model to internal/models

* feat: add initial view template for Sonr.ID

* docs(concepts): Add documentation for cosmos-proto

* docs: move IBC transfer documentation to tools section

* refactor: rename initpkl.go to pkl_init.go for better naming consistency

* docs(theme): update dark mode toggle icons

* refactor: update sqlite3 driver to ncruces/go-sqlite3

* feat: add Vault model and database interactions

* refactor: Improve SQLite schema with better constraints and indexes

* chore: update project dependencies

* fix: use grpc.WithInsecure() for gRPC connection

* config: set localhost as default Sonr gRPC URL

* refactor: improve gateway middleware and refactor server initialization

* refactor: Remove foreign key pragma from schema SQL

* refactor: Remove foreign key constraints from database schema

* refactor: Convert primary key columns from INTEGER to TEXT

* refactor: Remove unnecessary redirect in error handling

crypto/ucan/context.go

@@ -1,27 +1,66 @@
 package ucan
 
 import (
-	"context"
+	"fmt"
 )
 
-// CtxKey defines a distinct type for context keys used by the access
-// package
-type CtxKey string
-
-// TokenCtxKey is the key for adding an access UCAN to a context.Context
-const TokenCtxKey CtxKey = "UCAN"
-
-// CtxWithToken adds a UCAN value to a context
-func CtxWithToken(ctx context.Context, t Token) context.Context {
-	return context.WithValue(ctx, TokenCtxKey, t)
+var EmptyAttenuation = Attenuation{
+	Cap: Capability(nil),
+	Rsc: Resource(nil),
 }
 
-// FromCtx extracts a token from a given context if one is set, returning nil
-// otherwise
-func FromCtx(ctx context.Context) *Token {
-	iface := ctx.Value(TokenCtxKey)
-	if ref, ok := iface.(*Token); ok {
-		return ref
+// Permissions represents the type of attenuation
+type Permissions string
+
+const (
+	// AccountPermissions represents the smart account attenuation
+	AccountPermissions = Permissions("account")
+
+	// ServicePermissions represents the service attenuation
+	ServicePermissions = Permissions("service")
+
+	// VaultPermissions represents the vault attenuation
+	VaultPermissions = Permissions("vault")
+)
+
+// Cap returns the capability for the given AttenuationPreset
+func (a Permissions) NewCap(c string) Capability {
+	return a.GetCapabilities().Cap(c)
+}
+
+// NestedCapabilities returns the nested capabilities for the given AttenuationPreset
+func (a Permissions) GetCapabilities() NestedCapabilities {
+	var caps []string
+	switch a {
+	case AccountPermissions:
+		// caps = SmartAccountCapabilities()
+	case VaultPermissions:
+		// caps = VaultCapabilities()
 	}
-	return nil
+	return NewNestedCapabilities(caps...)
+}
+
+// Equals returns true if the given AttenuationPreset is equal to the receiver
+func (a Permissions) Equals(b Permissions) bool {
+	return a == b
+}
+
+// String returns the string representation of the AttenuationPreset
+func (a Permissions) String() string {
+	return string(a)
+}
+
+// ParseAttenuationData parses raw attenuation data into a structured format
+func ParseAttenuationData(data map[string]interface{}) (Permissions, map[string]interface{}, error) {
+	typeRaw, ok := data["preset"]
+	if !ok {
+		return "", nil, fmt.Errorf("missing preset type in attenuation data")
+	}
+
+	presetType, ok := typeRaw.(string)
+	if !ok {
+		return "", nil, fmt.Errorf("invalid preset type format")
+	}
+
+	return Permissions(presetType), data, nil
 }