Merge pull request #842 from Gara-Dorta/receive-swagger

Add swagger definitions for the receive end point

Dockerfile

@@ -92,10 +92,21 @@ COPY src/main.go /tmp/signal-cli-rest-api-src/
 COPY src/go.mod /tmp/signal-cli-rest-api-src/
 COPY src/go.sum /tmp/signal-cli-rest-api-src/
 COPY src/plugin_loader.go /tmp/signal-cli-rest-api-src/
+COPY src/docs/add_v1_receive_schemas.go /tmp/signal-cli-rest-api-src/docs/add_v1_receive_schemas.go
+
+RUN ls -la /tmp/signal-cli-rest-api-src
+
+# build the docs
+RUN cd /tmp/signal-cli-rest-api-src && ${GOPATH}/bin/swag init --requiredByDefault --outputTypes "go,json"
+
+# manually add the json schemas for the receive V1 endpoint to the docs
+RUN cd /tmp/signal-cli-rest-api-src/docs \
+	&& wget https://github.com/Gara-Dorta/signal-cli/releases/download/v${SIGNAL_CLI_VERSION}/signal-cli-${SIGNAL_CLI_VERSION}-json-schemas.tar.gz \
+	&& mkdir signal-cli-schemas \
+	&& tar xf signal-cli-${SIGNAL_CLI_VERSION}-json-schemas.tar.gz -C signal-cli-schemas \
+	&& go run add_v1_receive_schemas.go signal-cli-schemas
 
 # build signal-cli-rest-api
-RUN ls -la /tmp/signal-cli-rest-api-src
-RUN cd /tmp/signal-cli-rest-api-src && ${GOPATH}/bin/swag init --requiredByDefault
 RUN cd /tmp/signal-cli-rest-api-src && go build -o signal-cli-rest-api main.go
 RUN cd /tmp/signal-cli-rest-api-src && go test ./client -v && go test ./utils -v
 

src/docs/README.md

@@ -4,44 +4,64 @@ These files are generated using the [swaggo/swag](https://github.com/swaggo/swag
 
 There are two steps, first generating the docs and then running the web server.
 
-## Generating the docs
+## With docker compose (recommended)
 
-Regenerate the files with your local source code changes.
+1. Build the docs 
+    ```bash
+    docker compose build
+    ```
+2. Serve the docs
+    ```bash
+    docker compose up
+    ```
+3. Go to http://127.0.0.1:8080/swagger/index.html to view the docs
+    * If you get a Network error, replace the IP for the docker internal IP in the error, e.g: http://172.18.0.2:8080/swagger/index.html
+
+## Locally
+
+Install [go](https://go.dev/).
+
+### Generating the docs
 
 1. Set the current working dir to `src`
     ```bash
     cd src
     ```
 1. Run swag to generate the docs
-    * Option 1, via docker 
+    * Option 1, via go
         ```bash
-        docker run --rm -v $(pwd):/code ghcr.io/swaggo/swag:latest init --requiredByDefault
+        go run github.com/swaggo/swag/cmd/swag@v1.16.6 init --requiredByDefault --outputTypes "go,json"
         ```
-    * Option 2, install swag and run the command line tool
+    * Option 2, directly with swag
         ```bash
-        swag init --requiredByDefault
+        swag init --requiredByDefault --outputTypes "go,json"
+        ```
+    * Option 3, swag via docker 
+        ```bash
+        docker run --rm -v $(pwd):/code ghcr.io/swaggo/swag:latest init --requiredByDefault --outputTypes "go,json"
+        ```
+1. Set the current working dir to `src/docs`
+    ```bash
+    cd docs
+    ```
+1. Add the signal-cli receive V1 schemas
+    * Download the `signal-cli-x.y.z-json-schemas.tar.gz` schema files from https://github.com/Gara-Dorta/signal-cli/releases
+    * Extract the files
+    * Run the script to add the schemas
+        ```bash
+        go run add_v1_receive_schemas.go ./path-to-signal-cli-json-schema-folder
         ```
 
-## Run the web server
+### Run the web server
 
 Run the web server to visualize the generated docs.
 
+1. Navigate to the `src` folder
+    ```bash
+    cd src
+    ```
 1. Run the main script
-    * Option 1, via docker, run the command at the root of the repository
-        ```bash
-        docker compose up
-        ```
-    * Option 2, install go and run the command line tool
-        ```bash
-        cd src
-        ```
-        ```bash
-        go run main.go
-        ```
-
-
-## Navigate to the docs
-
-The docs are served at: http://127.0.0.1:8080/swagger/index.html
-
-When serving with docker, if you get a Network error, replace the IP for the docker internal IP in the error, e.g: http://172.18.0.2:8080/swagger/index.html
+    ```bash
+    go run main.go
+    ```
+1. Go to http://127.0.0.1:8080/swagger/index.html

src/docs/add_v1_receive_schemas.go

@@ -0,0 +1,327 @@
+//go:build ignore
+
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	_ "github.com/bbernhard/signal-cli-rest-api/docs"
+)
+
+const (
+	goDocsPath              = "docs.go"
+	jsonDocsPath            = "swagger.json"
+	openMarker              = "const docTemplate = `"
+	closeMarker             = "`\n\n// SwaggerInfo"
+	schemesTemplateValue    = "{{ marshal .Schemes }}"
+	schemesPlaceholderToken = "__SWAG_SCHEMES_PLACEHOLDER__"
+	receivePrefix           = "receive."
+	receivePathKey          = "/v1/receive/{number}"
+	receiveWrapper          = "data.Message"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintf(os.Stderr, "usage: go run update_receive_docs.go <receiveDir>\n")
+		os.Exit(1)
+	}
+	receiveDir := os.Args[1]
+
+	if err := run(receiveDir); err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+func run(receiveDir string) error {
+	definitions := make(map[string]interface{})
+
+	titleByFile, err := addReceiveSchemas(definitions, receiveDir)
+	if err != nil {
+		return err
+	}
+
+	updateReceiveSchemaRefs(definitions, titleByFile)
+
+	addEnvelopeWrapperDefinition(definitions)
+
+	if err := updateDocsGo(definitions); err != nil {
+		return err
+	}
+
+	if err := updateSwaggerJSON(definitions); err != nil {
+		return err
+	}
+
+	fmt.Printf("updated %s\n", goDocsPath)
+	fmt.Printf("updated %s\n", jsonDocsPath)
+	return nil
+}
+
+func updateDocsGo(receiveDefinitions map[string]interface{}) error {
+	content, err := os.ReadFile(goDocsPath)
+	if err != nil {
+		return fmt.Errorf("read %s: %w", goDocsPath, err)
+	}
+
+	template, templateStart, templateEnd, err := extractDocTemplate(string(content))
+	if err != nil {
+		return err
+	}
+
+	updatedTemplate, err := updateJSONDocument(toValidJson(template), receiveDefinitions)
+	if err != nil {
+		return err
+	}
+	updatedTemplate = encodeForGoRawString(updatedTemplate)
+
+	updated := string(content[:templateStart]) + updatedTemplate + string(content[templateEnd:])
+	if err := os.WriteFile(goDocsPath, []byte(updated), 0644); err != nil {
+		return fmt.Errorf("write %s: %w", goDocsPath, err)
+	}
+
+	return nil
+}
+
+func updateSwaggerJSON(receiveDefinitions map[string]interface{}) error {
+	content, err := os.ReadFile(jsonDocsPath)
+	if err != nil {
+		return fmt.Errorf("read %s: %w", jsonDocsPath, err)
+	}
+
+	updated, err := updateJSONDocument(string(content), receiveDefinitions)
+	if err != nil {
+		return err
+	}
+
+	if err := os.WriteFile(jsonDocsPath, []byte(updated), 0644); err != nil {
+		return fmt.Errorf("write %s: %w", jsonDocsPath, err)
+	}
+
+	return nil
+}
+
+func extractDocTemplate(content string) (string, int, int, error) {
+	start := strings.Index(content, openMarker)
+	if start == -1 {
+		return "", -1, -1, fmt.Errorf("could not find docTemplate start in %s", goDocsPath)
+	}
+
+	start += len(openMarker)
+	endOffset := strings.Index(content[start:], closeMarker)
+	if endOffset == -1 {
+		return "", -1, -1, fmt.Errorf("could not find docTemplate end in %s", goDocsPath)
+	}
+
+	end := start + endOffset
+	return content[start:end], start, end, nil
+}
+
+func toValidJson(content string) string {
+	content = strings.ReplaceAll(content, "` + \"`\" + `", "`")
+	content = strings.Replace(content, schemesTemplateValue, `"`+schemesPlaceholderToken+`"`, 1)
+	return content
+}
+
+func encodeForGoRawString(content string) string {
+	content = strings.ReplaceAll(content, "`", "` + \"`\" + `")
+	content = strings.Replace(content, `"`+schemesPlaceholderToken+`"`, schemesTemplateValue, 1)
+	return content
+}
+
+func updateJSONDocument(content string, receiveDefinitions map[string]interface{}) (string, error) {
+	var document map[string]interface{}
+	if err := json.Unmarshal([]byte(content), &document); err != nil {
+		return "", fmt.Errorf("parse document: %w", err)
+	}
+
+	if err := applyReceiveSchemaUpdates(document, receiveDefinitions); err != nil {
+		return "", err
+	}
+
+	raw, err := json.MarshalIndent(document, "", "    ")
+	if err != nil {
+		return "", fmt.Errorf("marshal document: %w", err)
+	}
+
+	return string(raw), nil
+}
+
+func addReceiveSchemas(definitions map[string]interface{}, receiveDir string) (map[string]string, error) {
+	entries, err := os.ReadDir(receiveDir)
+	if err != nil {
+		return nil, fmt.Errorf("read %s: %w", receiveDir, err)
+	}
+
+	files := make([]string, 0)
+	for _, entry := range entries {
+		if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".schema.json") {
+			continue
+		}
+		files = append(files, entry.Name())
+	}
+	sort.Strings(files)
+	titleByFile := make(map[string]string, len(files))
+
+	for _, name := range files {
+		fullPath := filepath.Join(receiveDir, name)
+		data, err := os.ReadFile(fullPath)
+		if err != nil {
+			return nil, fmt.Errorf("read schema file %s: %w", fullPath, err)
+		}
+
+		var schemaObj map[string]interface{}
+		if err := json.Unmarshal(data, &schemaObj); err != nil {
+			return nil, fmt.Errorf("parse schema file %s: %w", fullPath, err)
+		}
+
+		title, ok := schemaObj["title"].(string)
+		if !ok || strings.TrimSpace(title) == "" {
+			return nil, fmt.Errorf("schema file %s is missing title", fullPath)
+		}
+
+		titleByFile[name] = title
+		definitions[receivePrefix+title] = removeSchemaKeysRecursive(schemaObj, "")
+	}
+
+	return titleByFile, nil
+}
+
+func removeSchemaKeysRecursive(value interface{}, parentKey string) interface{} {
+	switch typed := value.(type) {
+	case map[string]interface{}:
+		updated := make(map[string]interface{}, len(typed))
+		for key, item := range typed {
+			if key == "$schema" || key == "$id" {
+				continue
+			}
+			if key == "title" && parentKey != "properties" {
+				continue
+			}
+			updated[key] = removeSchemaKeysRecursive(item, key)
+		}
+		return updated
+	case []interface{}:
+		updated := make([]interface{}, len(typed))
+		for idx, item := range typed {
+			updated[idx] = removeSchemaKeysRecursive(item, parentKey)
+		}
+		return updated
+	default:
+		return value
+	}
+}
+
+func updateReceiveSchemaRefs(definitions map[string]interface{}, titleByFile map[string]string) {
+	for key, value := range definitions {
+		if !strings.HasPrefix(key, receivePrefix) {
+			continue
+		}
+		definitions[key] = rewriteSchemaRefs(value, titleByFile)
+	}
+}
+
+func rewriteSchemaRefs(value interface{}, titleByFile map[string]string) interface{} {
+	switch typed := value.(type) {
+	case map[string]interface{}:
+		updated := make(map[string]interface{}, len(typed))
+		for k, v := range typed {
+			if k == "$ref" {
+				if refValue, ok := v.(string); ok {
+					if strings.HasSuffix(refValue, ".schema.json") {
+						base := filepath.Base(refValue)
+						if title, exists := titleByFile[base]; exists {
+							updated[k] = "#/definitions/" + receivePrefix + title
+							continue
+						}
+					}
+				}
+			}
+
+			updated[k] = rewriteSchemaRefs(v, titleByFile)
+		}
+		return updated
+	case []interface{}:
+		updated := make([]interface{}, len(typed))
+		for idx, item := range typed {
+			updated[idx] = rewriteSchemaRefs(item, titleByFile)
+		}
+		return updated
+	default:
+		return value
+	}
+}
+
+func addEnvelopeWrapperDefinition(definitions map[string]interface{}) {
+	definitions[receiveWrapper] = map[string]interface{}{
+		"type": "object",
+		"properties": map[string]interface{}{
+			"account":  map[string]interface{}{"type": "string"},
+			"envelope": map[string]interface{}{"$ref": "#/definitions/receive.MessageEnvelope"},
+		},
+		"required": []interface{}{"account", "envelope"},
+	}
+}
+
+func applyReceiveSchemaUpdates(document map[string]interface{}, receiveDefinitions map[string]interface{}) error {
+	definitions, err := getObject(document, "definitions")
+	if err != nil {
+		return err
+	}
+
+	for key := range definitions {
+		if strings.HasPrefix(key, receivePrefix) || key == receiveWrapper {
+			delete(definitions, key)
+		}
+	}
+
+	for key, value := range receiveDefinitions {
+		definitions[key] = value
+	}
+
+	paths, err := getObject(document, "paths")
+	if err != nil {
+		return err
+	}
+	receivePath, err := getObject(paths, receivePathKey)
+	if err != nil {
+		return err
+	}
+	receiveGet, err := getObject(receivePath, "get")
+	if err != nil {
+		return err
+	}
+	responses, err := getObject(receiveGet, "responses")
+	if err != nil {
+		return err
+	}
+	response200, err := getObject(responses, "200")
+	if err != nil {
+		return err
+	}
+
+	response200["schema"] = map[string]interface{}{
+		"$ref": "#/definitions/" + receiveWrapper,
+	}
+
+	return nil
+}
+
+func getObject(parent map[string]interface{}, key string) (map[string]interface{}, error) {
+	value, ok := parent[key]
+	if !ok {
+		return nil, fmt.Errorf("missing key %q", key)
+	}
+
+	obj, ok := value.(map[string]interface{})
+	if !ok {
+		return nil, fmt.Errorf("key %q is not an object", key)
+	}
+
+	return obj, nil
+}