Add API support for wiki pages

2 files changed, 158 insertions, 0 deletions

diff --git a/doc/api/README.md b/doc/api/README.md
index 266b5f018d9..f8e565ddbe5 100644
--- a/doc/api/README.md
+++ b/doc/api/README.md
@@ -58,6 +58,7 @@ following locations:
 - [Validate CI configuration](lint.md)
 - [V3 to V4](v3_to_v4.md)
 - [Version](version.md)
+- [Wikis](wikis.md)
 
 ## Road to GraphQL
 
diff --git a/doc/api/wikis.md b/doc/api/wikis.md
new file mode 100644
index 00000000000..10eebc4a3c1
--- /dev/null
+++ b/doc/api/wikis.md
@@ -0,0 +1,157 @@
+# Wikis API
+
+> [Introduced][ce-13372] in GitLab 10.0.
+
+Available only in APIv4.
+
+## List wiki pages
+
+Get all wiki pages for a given project.
+
+```
+GET /projects/:id/wikis
+```
+
+| Attribute | Type    | Required | Description           |
+| --------- | ------- | -------- | --------------------- |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
+| `with_content`      | boolean    | no      | Include pages' content  |
+
+```bash
+curl --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/1/wikis?with_content=1
+```
+
+Example response:
+
+```json
+[
+  {
+    "content" : "Here is an instruction how to deploy this project.",
+    "format" : "markdown",
+    "slug" : "deploy",
+    "title" : "deploy"
+  },
+  {
+    "content" : "Our development process is described here.",
+    "format" : "markdown",
+    "slug" : "development",
+    "title" : "development"
+  },{
+    "content" : "*  [Deploy](deploy)\n*  [Development](development)",
+    "format" : "markdown",
+    "slug" : "home",
+    "title" : "home"
+  }
+]
+```
+
+## Get a wiki page
+
+Get a wiki page for a given project.
+
+```
+GET /projects/:id/wikis/:slug
+```
+
+| Attribute | Type    | Required | Description           |
+| --------- | ------- | -------- | --------------------- |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
+| `slug` | string  | yes       | The slug (a unique string) of the wiki page |
+
+```bash
+curl --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/1/wikis/home
+```
+
+Example response:
+
+```json
+[
+  {
+    "content" : "home page",
+    "format" : "markdown",
+    "slug" : "home",
+    "title" : "home"
+  }
+]
+```
+
+## Create a new wiki page
+
+Creates a new wiki page for the given repository with the given title, slug, and content.
+
+```
+POST /projects/:id/wikis
+```
+
+| Attribute     | Type    | Required | Description                  |
+| ------------- | ------- | -------- | ---------------------------- |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
+| `content`       | string  | yes      | The content of the wiki page |
+| `title`        | string  | yes      | The title of the wiki page        |
+| `format` | string  | no       | The format of the wiki page. Available formats are: `markdown` (default), `rdoc`, and `asciidoc` |
+
+```bash
+curl --data "format=rdoc&title=Hello&content=Hello world" --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v4/projects/1/wikis"
+```
+
+Example response:
+
+```json
+{ 
+  "content" : "Hello world",
+  "format" : "markdown",
+  "slug" : "Hello",
+  "title" : "Hello"
+} 
+```
+
+## Edit an existing wiki page
+
+Updates an existing wiki page. At least one parameter is required to update the wiki page.
+
+```
+PUT /projects/:id/wikis/:slug
+```
+
+| Attribute       | Type    | Required                          | Description                      |
+| --------------- | ------- | --------------------------------- | -------------------------------  |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
+| `content`       | string  | yes if `title` is not provided     | The content of the wiki page |
+| `title`        | string  | yes if `content` is not provided      | The title of the wiki page        |
+| `format` | string  | no       | The format of the wiki page. Available formats are: `markdown` (default), `rdoc`, and `asciidoc` |
+| `slug` | string  | yes       | The slug (a unique string) of the wiki page |
+
+
+```bash
+curl --request PUT --data "format=rdoc&content=documentation&title=Docs" --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v4/projects/1/wikis/foo"
+```
+
+Example response:
+
+```json
+{
+  "content" : "documentation",
+  "format" : "markdown",
+  "slug" : "Docs",
+  "title" : "Docs"
+}
+```
+
+## Delete a wiki page
+
+Deletes a wiki page with a given slug.
+
+```
+DELETE /projects/:id/wikis/:slug
+```
+
+| Attribute | Type    | Required | Description           |
+| --------- | ------- | -------- | --------------------- |
+| `id`      | integer/string    | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
+| `slug` | string  | yes       | The slug (a unique string) of the wiki page |
+
+```bash
+curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" "https://gitlab.example.com/api/v4/projects/1/wikis/foo"
+```
+
+On success the HTTP status code is `204` and no JSON response is expected.