WIP add sourcegraph

services/sourcegraph/graphql.go

@@ -0,0 +1,237 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package sourcegraph
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// GraphQL queries for Sourcegraph API
+
+const hoverQuery = `
+query Hover($repo: String!, $rev: String!, $path: String!, $line: Int!, $char: Int!) {
+  repository(name: $repo) {
+    commit(rev: $rev) {
+      blob(path: $path) {
+        lsif {
+          hover(line: $line, character: $char) {
+            markdown {
+              text
+            }
+            range {
+              start { line character }
+              end { line character }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+`
+
+const definitionQuery = `
+query Definition($repo: String!, $rev: String!, $path: String!, $line: Int!, $char: Int!) {
+  repository(name: $repo) {
+    commit(rev: $rev) {
+      blob(path: $path) {
+        lsif {
+          definitions(line: $line, character: $char) {
+            nodes {
+              resource {
+                path
+                repository {
+                  name
+                }
+                commit {
+                  oid
+                }
+              }
+              range {
+                start { line character }
+                end { line character }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+`
+
+const referencesQuery = `
+query References($repo: String!, $rev: String!, $path: String!, $line: Int!, $char: Int!) {
+  repository(name: $repo) {
+    commit(rev: $rev) {
+      blob(path: $path) {
+        lsif {
+          references(line: $line, character: $char, first: 100) {
+            nodes {
+              resource {
+                path
+                repository {
+                  name
+                }
+                commit {
+                  oid
+                }
+              }
+              range {
+                start { line character }
+                end { line character }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+`
+
+const syncRepoMutation = `
+mutation SyncRepo($repo: String!) {
+  scheduleRepositoryPermissionsSync(repository: $repo) {
+    alwaysNil
+  }
+}
+`
+
+// Response parsing structures
+
+type hoverResponse struct {
+	Repository *struct {
+		Commit *struct {
+			Blob *struct {
+				LSIF *struct {
+					Hover *struct {
+						Markdown *struct {
+							Text string `json:"text"`
+						} `json:"markdown"`
+						Range *struct {
+							Start struct {
+								Line      int `json:"line"`
+								Character int `json:"character"`
+							} `json:"start"`
+							End struct {
+								Line      int `json:"line"`
+								Character int `json:"character"`
+							} `json:"end"`
+						} `json:"range"`
+					} `json:"hover"`
+				} `json:"lsif"`
+			} `json:"blob"`
+		} `json:"commit"`
+	} `json:"repository"`
+}
+
+type locationsResponse struct {
+	Repository *struct {
+		Commit *struct {
+			Blob *struct {
+				LSIF *struct {
+					Definitions *locationNodes `json:"definitions,omitempty"`
+					References  *locationNodes `json:"references,omitempty"`
+				} `json:"lsif"`
+			} `json:"blob"`
+		} `json:"commit"`
+	} `json:"repository"`
+}
+
+type locationNodes struct {
+	Nodes []struct {
+		Resource struct {
+			Path       string `json:"path"`
+			Repository struct {
+				Name string `json:"name"`
+			} `json:"repository"`
+			Commit struct {
+				OID string `json:"oid"`
+			} `json:"commit"`
+		} `json:"resource"`
+		Range struct {
+			Start struct {
+				Line      int `json:"line"`
+				Character int `json:"character"`
+			} `json:"start"`
+			End struct {
+				Line      int `json:"line"`
+				Character int `json:"character"`
+			} `json:"end"`
+		} `json:"range"`
+	} `json:"nodes"`
+}
+
+func parseHoverResponse(data json.RawMessage) (*HoverResult, error) {
+	var resp hoverResponse
+	if err := json.Unmarshal(data, &resp); err != nil {
+		return nil, fmt.Errorf("failed to parse hover response: %w", err)
+	}
+
+	if resp.Repository == nil || resp.Repository.Commit == nil ||
+		resp.Repository.Commit.Blob == nil || resp.Repository.Commit.Blob.LSIF == nil ||
+		resp.Repository.Commit.Blob.LSIF.Hover == nil {
+		return nil, nil // No hover info available
+	}
+
+	hover := resp.Repository.Commit.Blob.LSIF.Hover
+	result := &HoverResult{}
+
+	if hover.Markdown != nil {
+		result.Contents = hover.Markdown.Text
+	}
+
+	if hover.Range != nil {
+		result.Range = &Range{
+			Start: Position{
+				Line:      hover.Range.Start.Line,
+				Character: hover.Range.Start.Character,
+			},
+			End: Position{
+				Line:      hover.Range.End.Line,
+				Character: hover.Range.End.Character,
+			},
+		}
+	}
+
+	return result, nil
+}
+
+func parseLocationsResponse(data json.RawMessage, field string) ([]Location, error) {
+	var resp locationsResponse
+	if err := json.Unmarshal(data, &resp); err != nil {
+		return nil, fmt.Errorf("failed to parse locations response: %w", err)
+	}
+
+	if resp.Repository == nil || resp.Repository.Commit == nil ||
+		resp.Repository.Commit.Blob == nil || resp.Repository.Commit.Blob.LSIF == nil {
+		return nil, nil
+	}
+
+	var nodes *locationNodes
+	switch field {
+	case "definitions":
+		nodes = resp.Repository.Commit.Blob.LSIF.Definitions
+	case "references":
+		nodes = resp.Repository.Commit.Blob.LSIF.References
+	}
+
+	if nodes == nil {
+		return nil, nil
+	}
+
+	locations := make([]Location, 0, len(nodes.Nodes))
+	for _, node := range nodes.Nodes {
+		locations = append(locations, Location{
+			Repo:      node.Resource.Repository.Name,
+			Path:      node.Resource.Path,
+			Line:      node.Range.Start.Line,
+			Character: node.Range.Start.Character,
+		})
+	}
+
+	return locations, nil
+}