| 1 | package records |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "strconv" |
| 8 | "sync" |
| 9 | "time" |
| 10 | |
| 11 | "github.com/FelineStateMachine/tinyrelay/internal/communityread" |
| 12 | "github.com/FelineStateMachine/tinyrelay/internal/event" |
| 13 | "github.com/FelineStateMachine/tinyrelay/internal/policy" |
| 14 | "github.com/FelineStateMachine/tinyrelay/internal/storage" |
| 15 | ) |
| 16 | |
| 17 | type Config struct { |
| 18 | // Store holds the tenant database and records settings. |
| 19 | Store *storage.Store |
| 20 | // Policy returns the current durable tenant policy when records evaluates |
| 21 | // access or builds a projection. |
| 22 | Policy func() policy.Policy |
| 23 | // SetPolicy persists a policy change requested by records management. |
| 24 | SetPolicy func(policy.Policy) error |
| 25 | RelayURL string |
| 26 | GroupID string |
| 27 | // OnGenerated receives a signed event after its records clock transaction |
| 28 | // commits. The callback commonly persists, publishes or queues the event. |
| 29 | OnGenerated func(context.Context, event.Event) error |
| 30 | // DeliverNotification delivers a sealed notification event to its target. |
| 31 | DeliverNotification func(context.Context, event.Event, string) error |
| 32 | // PushNotification receives a plaintext summary of each notification for |
| 33 | // device delivery. The gift wrap itself is opaque to the relay once sealed. |
| 34 | PushNotification func(context.Context, string, string, string, string) error |
| 35 | OnTransfer func(context.Context, string, string) error |
| 36 | // Community supplies membership and moderation projections through the |
| 37 | // CommunityReader boundary. |
| 38 | Community CommunityReader |
| 39 | } |
| 40 | |
| 41 | // CommunityReader is the read-only boundary records needs from community. |
| 42 | // Implementations own the community schema and may use a transaction-backed |
| 43 | // snapshot when the host is publishing a projection. |
| 44 | type CommunityReader interface { |
| 45 | Members(ctx context.Context) ([]communityread.Member, error) |
| 46 | ModerationCounts(ctx context.Context, since int64) (communityread.ModerationCounts, error) |
| 47 | MemberStatus(ctx context.Context, pubkey string) (member bool, memberCount int, err error) |
| 48 | } |
| 49 | |
| 50 | type Member = communityread.Member |
| 51 | type ModerationCounts = communityread.ModerationCounts |
| 52 | |
| 53 | type Service struct { |
| 54 | store *storage.Store |
| 55 | policy func() policy.Policy |
| 56 | setPolicy func(policy.Policy) error |
| 57 | relayURL string |
| 58 | groupID string |
| 59 | secret string |
| 60 | onGenerated func(context.Context, event.Event) error |
| 61 | deliverNotification func(context.Context, event.Event, string) error |
| 62 | pushNotification func(context.Context, string, string, string, string) error |
| 63 | onTransfer func(context.Context, string, string) error |
| 64 | community CommunityReader |
| 65 | mu sync.Mutex |
| 66 | } |
| 67 | |
| 68 | type MembershipChange struct { |
| 69 | PubKey string |
| 70 | Added *bool |
| 71 | Roles []string |
| 72 | } |
| 73 | |
| 74 | const secretSetting = "records.relay_secret" |
| 75 | |
| 76 | const recordsSchema = ` |
| 77 | CREATE TABLE IF NOT EXISTS records_audit( |
| 78 | id INTEGER PRIMARY KEY AUTOINCREMENT, at INTEGER NOT NULL, actor TEXT NOT NULL, |
| 79 | action TEXT NOT NULL, target TEXT NOT NULL DEFAULT '' , detail TEXT NOT NULL DEFAULT '' ); |
| 80 | CREATE TABLE IF NOT EXISTS records_presence( |
| 81 | pubkey TEXT PRIMARY KEY, seen_at INTEGER NOT NULL); |
| 82 | CREATE TABLE IF NOT EXISTS records_pins( |
| 83 | position INTEGER PRIMARY KEY, ref TEXT NOT NULL UNIQUE); |
| 84 | CREATE TABLE IF NOT EXISTS records_view_runs( |
| 85 | name TEXT NOT NULL, at INTEGER NOT NULL, rows INTEGER NOT NULL); |
| 86 | ` |
| 87 | |
| 88 | func New(ctx context.Context, cfg Config) (*Service, error) { |
| 89 | if cfg.Store == nil { |
| 90 | return nil, errors.New("records: nil store" ) |
| 91 | } |
| 92 | if cfg.Policy == nil { |
| 93 | return nil, errors.New("records: nil policy function" ) |
| 94 | } |
| 95 | if cfg.Community == nil { |
| 96 | return nil, errors.New("records: nil community reader" ) |
| 97 | } |
| 98 | if _, err := cfg.Store.DB().ExecContext(ctx, recordsSchema); err != nil { |
| 99 | return nil, fmt.Errorf("records schema: %w" , err) |
| 100 | } |
| 101 | secret, err := loadOrCreateSecret(ctx, cfg.Store) |
| 102 | if err != nil { |
| 103 | return nil, err |
| 104 | } |
| 105 | groupID := cfg.GroupID |
| 106 | if groupID == "" { |
| 107 | groupID = cfg.RelayURL |
| 108 | } |
| 109 | return &Service{store: cfg.Store, policy: cfg.Policy, setPolicy: cfg.SetPolicy, relayURL: cfg.RelayURL, groupID: groupID, secret: secret, onGenerated: cfg.OnGenerated, deliverNotification: cfg.DeliverNotification, pushNotification: cfg.PushNotification, onTransfer: cfg.OnTransfer, community: cfg.Community}, nil |
| 110 | } |
| 111 | |
| 112 | var roleOrder = []string{"owner" , "moderator" , "member" , "agent" } |
| 113 | var rolesAbout = map[string]string{"owner" : "relay owner" , "moderator" : "relay moderator" , "member" : "relay member" , "agent" : "agent under an owner-signed grant" } |
| 114 | |
| 115 | type Presence struct { |
| 116 | PubKey string `json:"pubkey"` |
| 117 | SeenAt int64 `json:"seen_at"` |
| 118 | } |
| 119 | |
| 120 | type View struct { |
| 121 | Name string `json:"name"` |
| 122 | Event event.Event `json:"event"` |
| 123 | Rows int `json:"rows"` |
| 124 | } |
| 125 | |
| 126 | type ViewRun struct { |
| 127 | At int64 `json:"at"` |
| 128 | Rows int `json:"rows"` |
| 129 | } |
| 130 | |
| 131 | var viewNames = []string{"profiles" , "relays" , "calendar" , "moderation" , "articles" , "zaps" , "presence" } |
| 132 | |
| 133 | func calendarStart(e event.Event) int64 { |
| 134 | s := event.Tag(e, "start" ) |
| 135 | if e.Kind == 31922 { |
| 136 | t, err := time.Parse("2006-01-02" , s) |
| 137 | if err != nil { |
| 138 | return 0 |
| 139 | } |
| 140 | return t.Unix() |
| 141 | } |
| 142 | n, err := strconv.ParseInt(s, 10, 64) |
| 143 | if err != nil { |
| 144 | return 0 |
| 145 | } |
| 146 | return n |
| 147 | } |
| 148 | func articlePublished(e event.Event) int64 { |
| 149 | s := event.Tag(e, "published_at" ) |
| 150 | if n, err := strconv.ParseInt(s, 10, 64); err == nil { |
| 151 | return n |
| 152 | } |
| 153 | return e.CreatedAt |
| 154 | } |
| 155 | |
| 156 | func minInt(a, b int) int { |
| 157 | if a < b { |
| 158 | return a |
| 159 | } |
| 160 | return b |
| 161 | } |
| 162 | |
| 163 | func trimString(v any, n int) string { |
| 164 | s, ok := v.(string) |
| 165 | if !ok { |
| 166 | return "" |
| 167 | } |
| 168 | if len(s) > n { |
| 169 | return s[:n] |
| 170 | } |
| 171 | return s |
| 172 | } |
| 173 | |
| 174 | type successionLog struct { |
| 175 | At int64 `json:"at"` |
| 176 | From string `json:"from"` |
| 177 | To string `json:"to"` |
| 178 | } |
| 179 | |
| 180 | func maxInt(a, b int) int { |
| 181 | if a > b { |
| 182 | return a |
| 183 | } |
| 184 | return b |
| 185 | } |
| 186 | |
| 187 | var _ = strconv.IntSize |