Add total coverage aggregation with weighted average and forward-fill

CLAUDE.md

@@ -17,15 +17,17 @@ source .env.local && psql "postgresql://postgres.dkrxtcbaqzrodvsagwwn:$SUPABASE_
 source .env.local && psql "postgresql://postgres.awegqusxzsmlgxaxyyrq:$SUPABASE_DB_PASSWORD_PRD@aws-0-us-west-1.pooler.supabase.com:6543/postgres"
 ```
 
-**CRITICAL: Always test queries on production database before making changes**
+**CRITICAL**: Always test queries on production database before making changes
 
 When investigating performance issues or timeouts:
+
 1. **Test the actual query on production database first** using psql with `\timing` enabled
 2. **Measure the actual execution time** - don't guess or assume what the problem is
 3. **Only after confirming the root cause** should you make code changes
 4. **Never make blind fixes** based on assumptions - always verify the problem first
 
 Example workflow for investigating slow queries:
+
 ```bash
 # Connect to production database
 source .env.local && psql "postgresql://postgres.awegqusxzsmlgxaxyyrq:$SUPABASE_DB_PASSWORD_PRD@aws-0-us-west-1.pooler.supabase.com:6543/postgres"
@@ -115,7 +117,7 @@ source .env.local && curl -sS -H "Authorization: Bearer $SENTRY_PERSONAL_TOKEN"
 
 The following variables must be set in .env.local file:
 
-- `SENTRY_PERSONAL_TOKEN`: Personal auth token with project:read permissions (get from https://gitauto-ai.sentry.io/settings/auth-tokens/)
+- `SENTRY_PERSONAL_TOKEN`: Personal auth token with project:read permissions (get from <https://gitauto-ai.sentry.io/settings/auth-tokens/>)
 - `SENTRY_ORG_SLUG`: Organization slug (gitauto-ai)
 - `SENTRY_PROJECT_ID`: Project ID (4506827829346304)
 
@@ -181,21 +183,18 @@ This is a Next.js 15 application using App Router for GitAuto - a SaaS platform
 ### Key Architectural Patterns
 
 1. **API Routes Organization** (`/app/api/`):
-
    - `/auth/[...nextauth]` - Authentication handling
    - `/github/*` - GitHub App integration (issues, repos, branches)
    - `/stripe/*` - Subscription management
    - `/jira/*` - Jira OAuth and project linking
    - `/supabase/*` - Database operations
 
 2. **Context Architecture**:
-
    - `AccountContext` - Global user/installation state, repository selection
    - Authentication flows through NextAuth session provider
    - PostHog analytics wrapper
 
 3. **Database Schema** (key tables):
-
    - `users` - GitHub users
    - `installations` - GitHub App installations
    - `repositories` - Repository configurations and rules
@@ -204,7 +203,6 @@ This is a Next.js 15 application using App Router for GitAuto - a SaaS platform
    - `oauth_tokens` - Third-party integrations
 
 4. **External Service Integration**:
-
    - **GitHub**: Octokit with App authentication, GraphQL for issue creation
    - **Stripe**: Customer portal, checkout sessions, webhook handling
    - **AWS**: EventBridge Scheduler for cron triggers
@@ -247,20 +245,23 @@ GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA public TO service_role;
 
 **CRITICAL**: Never proceed with git add/commit/push unless ALL tests pass 100%. There is no "mostly passed" - either all tests pass or the task is incomplete.
 
+**CRITICAL**: Fix ALL errors and warnings before proceeding to the next step. Do not continue running commands if there are errors or warnings - fix them first. Moving on without fixing is a waste of time.
+
 **EXCEPTION**: For blog-only changes (adding/editing blog posts in `app/blog/posts/`), tests can be skipped since blog content doesn't affect application functionality.
 
 When the user says "LGTM", execute these commands in order:
 
 1. `npm run types:generate` - Generate TypeScript types
-2. `npm run lint` - Run linting
-3. `npx tsc --noEmit` - Type-check ALL files including tests (use this to catch TypeScript errors)
-4. `npm test` - Run unit tests (must pass 100%, skip for blog-only changes)
-5. `npm run build` - Build the project
-6. **STOP if any test fails** - Fix all failures before proceeding (unless blog-only)
-7. `git fetch origin main && git merge origin/main` - Pull and merge latest main branch changes
-8. `git add <specific-file-paths>` - Stage specific changed files (NEVER use `git add .`, always specify exact file paths)
-9. Create a descriptive commit message based on changes (do NOT include Claude Code attribution)
-10. `git push` - Push to remote
+2. `npm run lint` - Run linting. **Fix any errors/warnings before proceeding.**
+3. `npx markdownlint-cli2 "**/*.md" "#node_modules"` - Lint markdown files. **Fix any errors before proceeding.**
+4. `npx tsc --noEmit` - Type-check ALL files including tests. **Fix any errors before proceeding.**
+5. `npm test` - Run unit tests (must pass 100%, skip for blog-only changes). **Fix any failures before proceeding.**
+6. `npm run build` - Build the project
+7. **STOP if any step fails** - Fix all failures before proceeding (unless blog-only)
+8. `git fetch origin main && git merge origin/main` - Pull and merge latest main branch changes
+9. `git add <specific-file-paths>` - Stage specific changed files including updated/created test files (NEVER use `git add .`, always specify exact file paths)
+10. Create a descriptive commit message based on changes (do NOT include Claude Code attribution)
+11. `git push` - Push to remote
 
 **Note**: E2E tests (`npx playwright test`) are skipped during LGTM to save time. Run them manually when needed.
 

app/actions/supabase/repo-coverage/get-repo-coverage.test.ts

@@ -0,0 +1,77 @@
+import { getRepoCoverage } from "./get-repo-coverage";
+import { supabaseAdmin } from "@/lib/supabase/server";
+
+jest.mock("@/lib/supabase/server", () => ({
+  supabaseAdmin: {
+    from: jest.fn(),
+  },
+}));
+
+describe("getRepoCoverage", () => {
+  const mockFrom = supabaseAdmin.from as jest.Mock;
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("returns repo coverage data for owner and repo", async () => {
+    const mockData = [
+      {
+        id: 1,
+        owner_id: 123,
+        repo_id: 456,
+        statement_coverage: 80,
+        lines_covered: 800,
+        lines_total: 1000,
+        created_at: "2024-01-01T00:00:00Z",
+      },
+    ];
+
+    mockFrom.mockReturnValue({
+      select: jest.fn().mockReturnValue({
+        eq: jest.fn().mockReturnValue({
+          eq: jest.fn().mockReturnValue({
+            order: jest.fn().mockResolvedValue({ data: mockData, error: null }),
+          }),
+        }),
+      }),
+    });
+
+    const result = await getRepoCoverage(123, 456);
+
+    expect(mockFrom).toHaveBeenCalledWith("repo_coverage");
+    expect(result).toEqual(mockData);
+  });
+
+  it("returns empty array when no data", async () => {
+    mockFrom.mockReturnValue({
+      select: jest.fn().mockReturnValue({
+        eq: jest.fn().mockReturnValue({
+          eq: jest.fn().mockReturnValue({
+            order: jest.fn().mockResolvedValue({ data: null, error: null }),
+          }),
+        }),
+      }),
+    });
+
+    const result = await getRepoCoverage(123, 456);
+
+    expect(result).toEqual([]);
+  });
+
+  it("throws error when query fails", async () => {
+    const mockError = { message: "DB error" };
+
+    mockFrom.mockReturnValue({
+      select: jest.fn().mockReturnValue({
+        eq: jest.fn().mockReturnValue({
+          eq: jest.fn().mockReturnValue({
+            order: jest.fn().mockResolvedValue({ data: null, error: mockError }),
+          }),
+        }),
+      }),
+    });
+
+    await expect(getRepoCoverage(123, 456)).rejects.toEqual(mockError);
+  });
+});

app/actions/supabase/coverage/get-repo-coverage.ts → app/actions/supabase/repo-coverage/get-repo-coverage.ts

@@ -3,7 +3,10 @@
 import { supabaseAdmin } from "@/lib/supabase/server";
 import { Tables } from "@/types/supabase";
 
-export async function getRepoCoverage(ownerId: number, repoId: number) {
+export const getRepoCoverage = async (
+  ownerId: number,
+  repoId: number
+): Promise<Tables<"repo_coverage">[]> => {
   const { data, error } = await supabaseAdmin
     .from("repo_coverage")
     .select("*")
@@ -16,5 +19,5 @@ export async function getRepoCoverage(ownerId: number, repoId: number) {
     throw error;
   }
 
-  return data as Tables<"repo_coverage">[];
-}
+  return data || [];
+};

app/actions/supabase/total-repo-coverage/get-total-coverage.test.ts

@@ -0,0 +1,67 @@
+import { getTotalCoverage } from "./get-total-coverage";
+import { supabaseAdmin } from "@/lib/supabase/server";
+
+jest.mock("@/lib/supabase/server", () => ({
+  supabaseAdmin: {
+    from: jest.fn(),
+  },
+}));
+
+describe("getTotalCoverage", () => {
+  const mockFrom = supabaseAdmin.from as jest.Mock;
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("returns total coverage data for an owner", async () => {
+    const mockData = [
+      {
+        owner_id: 123,
+        coverage_date: "2024-01-01",
+        lines_covered: 800,
+        lines_total: 1000,
+        statement_coverage: 80,
+      },
+    ];
+
+    mockFrom.mockReturnValue({
+      select: jest.fn().mockReturnValue({
+        eq: jest.fn().mockReturnValue({
+          order: jest.fn().mockResolvedValue({ data: mockData, error: null }),
+        }),
+      }),
+    });
+
+    const result = await getTotalCoverage(123);
+
+    expect(mockFrom).toHaveBeenCalledWith("total_repo_coverage");
+    expect(result).toEqual(mockData);
+  });
+
+  it("returns empty array when no data", async () => {
+    mockFrom.mockReturnValue({
+      select: jest.fn().mockReturnValue({
+        eq: jest.fn().mockReturnValue({
+          order: jest.fn().mockResolvedValue({ data: null, error: null }),
+        }),
+      }),
+    });
+
+    const result = await getTotalCoverage(123);
+
+    expect(result).toEqual([]);
+  });
+
+  it("throws error when query fails", async () => {
+    mockFrom.mockReturnValue({
+      select: jest.fn().mockReturnValue({
+        eq: jest.fn().mockReturnValue({
+          order: jest.fn().mockResolvedValue({ data: null, error: { message: "DB error" } }),
+        }),
+      }),
+    });
+
+    await expect(getTotalCoverage(123)).rejects.toThrow("DB error");
+  });
+});

app/actions/supabase/total-repo-coverage/get-total-coverage.ts

@@ -0,0 +1,18 @@
+"use server";
+
+import { supabaseAdmin } from "@/lib/supabase/server";
+import { Tables } from "@/types/supabase";
+
+export const getTotalCoverage = async (
+  ownerId: number
+): Promise<Tables<"total_repo_coverage">[]> => {
+  const { data, error } = await supabaseAdmin
+    .from("total_repo_coverage")
+    .select("*")
+    .eq("owner_id", ownerId)
+    .order("coverage_date", { ascending: true });
+
+  if (error) throw new Error(error.message);
+
+  return data || [];
+};

app/dashboard/charts/components/ChartLegend.test.tsx

@@ -0,0 +1,22 @@
+import { render, screen } from "@testing-library/react";
+import ChartLegend from "./ChartLegend";
+
+describe("ChartLegend", () => {
+  it("renders all three coverage types in correct order", () => {
+    render(<ChartLegend />);
+
+    const items = screen.getAllByRole("listitem");
+    expect(items).toHaveLength(3);
+    expect(items[0]).toHaveTextContent("Statement Coverage");
+    expect(items[1]).toHaveTextContent("Function Coverage");
+    expect(items[2]).toHaveTextContent("Branch Coverage");
+  });
+
+  it("renders with correct colors", () => {
+    render(<ChartLegend />);
+
+    expect(screen.getByText("Statement Coverage")).toHaveStyle({ color: "#8884d8" });
+    expect(screen.getByText("Function Coverage")).toHaveStyle({ color: "#82ca9d" });
+    expect(screen.getByText("Branch Coverage")).toHaveStyle({ color: "#ffc658" });
+  });
+});

app/dashboard/charts/components/ChartLegend.tsx

@@ -0,0 +1,46 @@
+interface LegendItem {
+  name: string;
+  color: string;
+}
+
+const COVERAGE_LEGEND_ITEMS: LegendItem[] = [
+  { name: "Statement Coverage", color: "#8884d8" },
+  { name: "Function Coverage", color: "#82ca9d" },
+  { name: "Branch Coverage", color: "#ffc658" },
+];
+
+const LegendIcon = ({ color }: { color: string }) => (
+  <svg
+    className="recharts-surface"
+    width="14"
+    height="14"
+    viewBox="0 0 32 32"
+    style={{ display: "inline-block", verticalAlign: "middle", marginRight: 4 }}
+  >
+    <path
+      strokeWidth="4"
+      fill="none"
+      stroke={color}
+      d="M0,16h10.666666666666666A5.333333333333333,5.333333333333333,0,1,1,21.333333333333332,16H32M21.333333333333332,16A5.333333333333333,5.333333333333333,0,1,1,10.666666666666666,16"
+    />
+  </svg>
+);
+
+export default function ChartLegend() {
+  return (
+    <ul className="recharts-default-legend" style={{ padding: 0, margin: 0, textAlign: "center" }}>
+      {COVERAGE_LEGEND_ITEMS.map((item) => (
+        <li
+          key={item.name}
+          className="recharts-legend-item"
+          style={{ display: "inline-block", marginRight: 10 }}
+        >
+          <LegendIcon color={item.color} />
+          <span className="recharts-legend-item-text" style={{ color: item.color }}>
+            {item.name}
+          </span>
+        </li>
+      ))}
+    </ul>
+  );
+}

app/dashboard/charts/components/CoverageChart.tsx

@@ -11,6 +11,7 @@ import {
   ResponsiveContainer,
 } from "recharts";
 import { Tables } from "@/types/supabase";
+import ChartLegend from "./ChartLegend";
 
 interface CoverageChartProps {
   data: Tables<"repo_coverage">[];
@@ -124,7 +125,7 @@ export default function CoverageChart({
           />
           <YAxis domain={[0, 100]} tick={{ fontSize: 12 }} />
           <Tooltip formatter={(value: number) => [`${value}%`, ""]} labelFormatter={formatXAxis} />
-          <Legend />
+          <Legend content={ChartLegend} />
           <Line
             type="monotone"
             dataKey="statement"