[feature] Allow exposing allows, implement `/api/v1/domain_blocks` and `/api/v1/domain_allows` (#4169)

- adds config flags `instance-expose-allowlist` and `instance-expose-allowlist-web` to allow instance admins to expose their allowlist via the web + api.
- renames `instance-expose-suspended` and `instance-expose-suspended-web` to  `instance-expose-blocklist` and `instance-expose-blocklist-web`.
- deprecates the `suspended` filter on `/api/v1/instance/peers` endpoint and adds `blocked` and `allowed` filters
- adds the `flat` query param to `/api/v1/instance/peers` to allow forcing return of a flat list of domains
- implements `/api/v1/instance/domain_blocks` and `/api/v1/instance/domain_allows` endpoints with or without auth depending on config
- rejigs the instance about page to include a general section on domain permissions, with block and allow subsections (and appropriate links)

Closes https://codeberg.org/superseriousbusiness/gotosocial/issues/3847
Closes https://codeberg.org/superseriousbusiness/gotosocial/issues/4150

Prerequisite to https://codeberg.org/superseriousbusiness/gotosocial/issues/3711

Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4169
Co-authored-by: tobi <tobi.smethurst@protonmail.com>
Co-committed-by: tobi <tobi.smethurst@protonmail.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/internal/api/client/instance/instance.go b/internal/api/client/instance/instance.go
index cd6c438c8..0e06941cc 100644
--- a/internal/api/client/instance/instance.go
+++ b/internal/api/client/instance/instance.go
@@ -29,7 +29,10 @@ const (
 	InstanceInformationPathV2 = "/v2/instance"
 	InstancePeersPath         = InstanceInformationPathV1 + "/peers"
 	InstanceRulesPath         = InstanceInformationPathV1 + "/rules"
+	InstanceBlocklistPath     = InstanceInformationPathV1 + "/domain_blocks"
+	InstanceAllowlistPath     = InstanceInformationPathV1 + "/domain_allows"
 	PeersFilterKey            = "filter" // PeersFilterKey is used to provide filters to /api/v1/instance/peers
+	PeersFlatKey              = "flat"   // PeersFlatKey is used to set "flat=true" in /api/v1/instance/peers
 )
 
 type Module struct {
@@ -45,9 +48,9 @@ func New(processor *processing.Processor) *Module {
 func (m *Module) Route(attachHandler func(method string, path string, f ...gin.HandlerFunc) gin.IRoutes) {
 	attachHandler(http.MethodGet, InstanceInformationPathV1, m.InstanceInformationGETHandlerV1)
 	attachHandler(http.MethodGet, InstanceInformationPathV2, m.InstanceInformationGETHandlerV2)
-
 	attachHandler(http.MethodPatch, InstanceInformationPathV1, m.InstanceUpdatePATCHHandler)
 	attachHandler(http.MethodGet, InstancePeersPath, m.InstancePeersGETHandler)
-
 	attachHandler(http.MethodGet, InstanceRulesPath, m.InstanceRulesGETHandler)
+	attachHandler(http.MethodGet, InstanceBlocklistPath, m.InstanceDomainBlocksGETHandler)
+	attachHandler(http.MethodGet, InstanceAllowlistPath, m.InstanceDomainAllowsGETHandler)
 }