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internal/database/project_dashboard.go

@@ -0,0 +1,91 @@
+package database
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+// ProjectDashboardFact 仪表盘跨项目近期事实条目。
+type ProjectDashboardFact struct {
+	ID          string    `json:"id"`
+	ProjectID   string    `json:"project_id"`
+	ProjectName string    `json:"project_name"`
+	FactKey     string    `json:"fact_key"`
+	Category    string    `json:"category"`
+	Summary     string    `json:"summary"`
+	Confidence  string    `json:"confidence"`
+	Pinned      bool      `json:"pinned"`
+	UpdatedAt   time.Time `json:"updated_at"`
+}
+
+// ProjectDashboardTotals 仪表盘项目事实汇总计数。
+type ProjectDashboardTotals struct {
+	ActiveProjects int `json:"active_projects"`
+	TotalFacts     int `json:"total_facts"`
+}
+
+// ProjectDashboardSummary 仪表盘项目情报摘要。
+type ProjectDashboardSummary struct {
+	RecentFacts []ProjectDashboardFact `json:"recent_facts"`
+	Totals      ProjectDashboardTotals `json:"totals"`
+}
+
+// GetProjectDashboardSummary 聚合跨项目近期事实（仅活跃项目、排除 deprecated）。
+func (db *DB) GetProjectDashboardSummary(factLimit int) (*ProjectDashboardSummary, error) {
+	if factLimit <= 0 {
+		factLimit = 5
+	}
+	if factLimit > 50 {
+		factLimit = 50
+	}
+
+	out := &ProjectDashboardSummary{
+		RecentFacts: []ProjectDashboardFact{},
+	}
+
+	if err := db.QueryRow(`SELECT COUNT(*) FROM projects WHERE status = 'active'`).Scan(&out.Totals.ActiveProjects); err != nil {
+		return nil, fmt.Errorf("统计活跃项目失败: %w", err)
+	}
+	if err := db.QueryRow(
+		`SELECT COUNT(*) FROM project_facts f
+		 INNER JOIN projects p ON p.id = f.project_id
+		 WHERE f.confidence != 'deprecated' AND p.status = 'active'`,
+	).Scan(&out.Totals.TotalFacts); err != nil {
+		return nil, fmt.Errorf("统计事实失败: %w", err)
+	}
+
+	rows, err := db.Query(
+		`SELECT f.id, f.project_id, p.name, f.fact_key, f.category, f.summary, f.confidence, f.pinned, f.updated_at
+		 FROM project_facts f
+		 INNER JOIN projects p ON p.id = f.project_id
+		 WHERE f.confidence != 'deprecated' AND p.status = 'active'
+		 ORDER BY f.pinned DESC, f.updated_at DESC
+		 LIMIT ?`,
+		factLimit,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("查询近期事实失败: %w", err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var item ProjectDashboardFact
+		var pinned int
+		var updatedAt string
+		if err := rows.Scan(
+			&item.ID, &item.ProjectID, &item.ProjectName, &item.FactKey,
+			&item.Category, &item.Summary, &item.Confidence, &pinned, &updatedAt,
+		); err != nil {
+			return nil, err
+		}
+		item.Pinned = pinned != 0
+		item.ProjectName = strings.TrimSpace(item.ProjectName)
+		item.UpdatedAt = parseDBTime(updatedAt)
+		out.RecentFacts = append(out.RecentFacts, item)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return out, nil
+}