| 1 | package api |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "encoding/json" |
| 6 | "fmt" |
| 7 | "io" |
| 8 | "net/http" |
| 9 | "net/url" |
| 10 | ) |
| 11 | |
| 12 | // ContentResponse represents a Confluence page from the REST API. |
| 13 | type ContentResponse struct { |
| 14 | ID string `json:"id"` |
| 15 | Type string `json:"type"` |
| 16 | Title string `json:"title"` |
| 17 | Version Version `json:"version"` |
| 18 | Body Body `json:"body"` |
| 19 | } |
| 20 | |
| 21 | // Version holds page version info. |
| 22 | type Version struct { |
| 23 | Number int `json:"number"` |
| 24 | Message string `json:"message,omitempty"` |
| 25 | } |
| 26 | |
| 27 | // Body holds page body content. |
| 28 | type Body struct { |
| 29 | Storage StorageBody `json:"storage"` |
| 30 | } |
| 31 | |
| 32 | // StorageBody holds the storage format representation. |
| 33 | type StorageBody struct { |
| 34 | Value string `json:"value"` |
| 35 | Representation string `json:"representation"` |
| 36 | } |
| 37 | |
| 38 | // updateRequest is the JSON payload for updating a page. |
| 39 | type updateRequest struct { |
| 40 | Version Version `json:"version"` |
| 41 | Title string `json:"title"` |
| 42 | Type string `json:"type"` |
| 43 | Body Body `json:"body"` |
| 44 | } |
| 45 | |
| 46 | // searchResults wraps the /rest/api/content search response. |
| 47 | type searchResults struct { |
| 48 | Results []ContentResponse `json:"results"` |
| 49 | Size int `json:"size"` |
| 50 | } |
| 51 | |
| 52 | // GetContent fetches a page by ID with storage body and version info. |
| 53 | func (c *Client) GetContent(pageID string) (*ContentResponse, error) { |
| 54 | path := fmt.Sprintf("/rest/api/content/%s?expand=body.storage,version", pageID) |
| 55 | req, err := c.newRequest(http.MethodGet, path) |
| 56 | if err != nil { |
| 57 | return nil, err |
| 58 | } |
| 59 | |
| 60 | resp, err := c.HTTPClient.Do(req) |
| 61 | if err != nil { |
| 62 | return nil, fmt.Errorf("fetching page %s: %w", pageID, err) |
| 63 | } |
| 64 | defer resp.Body.Close() |
| 65 | |
| 66 | if err := checkResponse(resp); err != nil { |
| 67 | return nil, err |
| 68 | } |
| 69 | |
| 70 | var content ContentResponse |
| 71 | if err := json.NewDecoder(resp.Body).Decode(&content); err != nil { |
| 72 | return nil, fmt.Errorf("decoding response: %w", err) |
| 73 | } |
| 74 | return &content, nil |
| 75 | } |
| 76 | |
| 77 | // FindContent searches for a page by space key and title. |
| 78 | func (c *Client) FindContent(spaceKey, title string) (*ContentResponse, error) { |
| 79 | params := url.Values{ |
| 80 | "spaceKey": {spaceKey}, |
| 81 | "title": {title}, |
| 82 | "expand": {"body.storage,version"}, |
| 83 | } |
| 84 | path := "/rest/api/content?" + params.Encode() |
| 85 | req, err := c.newRequest(http.MethodGet, path) |
| 86 | if err != nil { |
| 87 | return nil, err |
| 88 | } |
| 89 | |
| 90 | resp, err := c.HTTPClient.Do(req) |
| 91 | if err != nil { |
| 92 | return nil, fmt.Errorf("searching for page %q in space %q: %w", title, spaceKey, err) |
| 93 | } |
| 94 | defer resp.Body.Close() |
| 95 | |
| 96 | if err := checkResponse(resp); err != nil { |
| 97 | return nil, err |
| 98 | } |
| 99 | |
| 100 | var results searchResults |
| 101 | if err := json.NewDecoder(resp.Body).Decode(&results); err != nil { |
| 102 | return nil, fmt.Errorf("decoding search results: %w", err) |
| 103 | } |
| 104 | |
| 105 | if results.Size == 0 { |
| 106 | return nil, fmt.Errorf("page %q not found in space %q", title, spaceKey) |
| 107 | } |
| 108 | |
| 109 | return &results.Results[0], nil |
| 110 | } |
| 111 | |
| 112 | // GetPage resolves a PageRef to a full ContentResponse. |
| 113 | func (c *Client) GetPage(ref *PageRef) (*ContentResponse, error) { |
| 114 | if ref.PageID != "" { |
| 115 | return c.GetContent(ref.PageID) |
| 116 | } |
| 117 | return c.FindContent(ref.SpaceKey, ref.Title) |
| 118 | } |
| 119 | |
| 120 | // UpdateContent updates a page's storage body, incrementing the version. |
| 121 | func (c *Client) UpdateContent(pageID string, current *ContentResponse, newBody string, message string) error { |
| 122 | payload := updateRequest{ |
| 123 | Version: Version{ |
| 124 | Number: current.Version.Number + 1, |
| 125 | Message: message, |
| 126 | }, |
| 127 | Title: current.Title, |
| 128 | Type: current.Type, |
| 129 | Body: Body{ |
| 130 | Storage: StorageBody{ |
| 131 | Value: newBody, |
| 132 | Representation: "storage", |
| 133 | }, |
| 134 | }, |
| 135 | } |
| 136 | |
| 137 | data, err := json.Marshal(payload) |
| 138 | if err != nil { |
| 139 | return fmt.Errorf("marshaling update: %w", err) |
| 140 | } |
| 141 | |
| 142 | path := fmt.Sprintf("/rest/api/content/%s", pageID) |
| 143 | req, err := c.newRequest(http.MethodPut, path) |
| 144 | if err != nil { |
| 145 | return err |
| 146 | } |
| 147 | req.Body = io.NopCloser(bytes.NewReader(data)) |
| 148 | req.ContentLength = int64(len(data)) |
| 149 | |
| 150 | resp, err := c.HTTPClient.Do(req) |
| 151 | if err != nil { |
| 152 | return fmt.Errorf("updating page %s: %w", pageID, err) |
| 153 | } |
| 154 | defer resp.Body.Close() |
| 155 | |
| 156 | return checkResponse(resp) |
| 157 | } |
| 158 | |
| 159 | // checkResponse returns an error for non-2xx status codes. |
| 160 | func checkResponse(resp *http.Response) error { |
| 161 | if resp.StatusCode >= 200 && resp.StatusCode < 300 { |
| 162 | return nil |
| 163 | } |
| 164 | |
| 165 | body, _ := io.ReadAll(resp.Body) |
| 166 | |
| 167 | switch resp.StatusCode { |
| 168 | case http.StatusUnauthorized: |
| 169 | return fmt.Errorf("authentication failed (401): invalid or expired token") |
| 170 | case http.StatusForbidden: |
| 171 | return fmt.Errorf("access denied (403): insufficient permissions") |
| 172 | case http.StatusNotFound: |
| 173 | return fmt.Errorf("page not found (404)") |
| 174 | case http.StatusConflict: |
| 175 | return fmt.Errorf("version conflict (409): page was modified since last fetch, re-pull and try again") |
| 176 | default: |
| 177 | return fmt.Errorf("API error (HTTP %d): %s", resp.StatusCode, string(body)) |
| 178 | } |
| 179 | } |
| 180 | |