feature: add PizzINT (Pentagon Pizza Index) site extractor

Adds a new site extractor for pizzint.watch, which tracks pizza shop
activity near the Pentagon as an OSINT indicator. The extractor fetches
the dashboard API and exposes DOUGHCON levels, restaurant activity, and
spike events.

Includes a CLI tool with an HTTP server mode (--serve) for embedding
the pizza status in dashboards or status displays.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

sites/pizzint/pizzint.go

@@ -0,0 +1,273 @@
+package pizzint
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log/slog"
+	"strings"
+	"time"
+
+	"gitea.stevedudenhoeffer.com/steve/go-extractor"
+)
+
+const dashboardAPIURL = "https://www.pizzint.watch/api/dashboard-data"
+
+// DoughconLevel represents the DOUGHCON threat level (modeled after DEFCON).
+// Lower numbers indicate higher activity.
+type DoughconLevel int
+
+const (
+	DoughconMaximum  DoughconLevel = 1 // Maximum Alert
+	DoughconHigh     DoughconLevel = 2 // High Activity
+	DoughconElevated DoughconLevel = 3 // Elevated Activity
+	DoughconWatch    DoughconLevel = 4 // Increased Intelligence Watch
+	DoughconQuiet    DoughconLevel = 5 // All Quiet
+)
+
+func (d DoughconLevel) String() string {
+	switch d {
+	case DoughconQuiet:
+		return "DOUGHCON 5 - ALL QUIET"
+	case DoughconWatch:
+		return "DOUGHCON 4 - DOUBLE TAKE"
+	case DoughconElevated:
+		return "DOUGHCON 3 - ELEVATED"
+	case DoughconHigh:
+		return "DOUGHCON 2 - HIGH ACTIVITY"
+	case DoughconMaximum:
+		return "DOUGHCON 1 - MAXIMUM ALERT"
+	default:
+		return fmt.Sprintf("DOUGHCON %d", d)
+	}
+}
+
+// Label returns a short label for the DOUGHCON level.
+func (d DoughconLevel) Label() string {
+	switch d {
+	case DoughconQuiet:
+		return "ALL QUIET"
+	case DoughconWatch:
+		return "DOUBLE TAKE"
+	case DoughconElevated:
+		return "ELEVATED"
+	case DoughconHigh:
+		return "HIGH ACTIVITY"
+	case DoughconMaximum:
+		return "MAXIMUM ALERT"
+	default:
+		return "UNKNOWN"
+	}
+}
+
+// Restaurant represents a monitored pizza restaurant near the Pentagon.
+type Restaurant struct {
+	Name              string  `json:"name"`
+	CurrentPopularity int     `json:"current_popularity"`
+	PercentOfUsual    *int    `json:"percent_of_usual,omitempty"`
+	IsSpike           bool    `json:"is_spike"`
+	SpikeMagnitude    string  `json:"spike_magnitude,omitempty"`
+	IsClosed          bool    `json:"is_closed"`
+	DataFreshness     string  `json:"data_freshness"`
+}
+
+// Status returns a human-readable status string like "QUIET", "CLOSED", or "139% SPIKE".
+func (r Restaurant) Status() string {
+	if r.IsClosed {
+		return "CLOSED"
+	}
+	if r.IsSpike && r.PercentOfUsual != nil {
+		return fmt.Sprintf("%d%% SPIKE", *r.PercentOfUsual)
+	}
+	if r.IsSpike {
+		return "SPIKE"
+	}
+	return "QUIET"
+}
+
+// Event represents a detected spike event at a monitored location.
+type Event struct {
+	Name       string `json:"name"`
+	MinutesAgo int    `json:"minutes_ago"`
+}
+
+// PizzaStatus is the top-level result from the PizzINT dashboard.
+type PizzaStatus struct {
+	DoughconLevel DoughconLevel `json:"doughcon_level"`
+	DoughconLabel string        `json:"doughcon_label"`
+	OverallIndex  int           `json:"overall_index"`
+	Restaurants   []Restaurant  `json:"restaurants"`
+	Events        []Event       `json:"events,omitempty"`
+	FetchedAt     time.Time     `json:"fetched_at"`
+}
+
+// Config holds configuration for the PizzINT extractor.
+type Config struct{}
+
+// DefaultConfig is the default PizzINT configuration.
+var DefaultConfig = Config{}
+
+func (c Config) validate() Config {
+	return c
+}
+
+// GetStatus fetches the current pizza activity status from the PizzINT dashboard.
+func (c Config) GetStatus(ctx context.Context, b extractor.Browser) (*PizzaStatus, error) {
+	c = c.validate()
+
+	slog.Info("fetching pizza status", "url", dashboardAPIURL)
+	doc, err := b.Open(ctx, dashboardAPIURL, extractor.OpenPageOptions{})
+	if err != nil {
+		return nil, fmt.Errorf("failed to open pizzint API: %w", err)
+	}
+	defer extractor.DeferClose(doc)
+
+	return extractStatus(doc)
+}
+
+// GetStatus is a convenience function using DefaultConfig.
+func GetStatus(ctx context.Context, b extractor.Browser) (*PizzaStatus, error) {
+	return DefaultConfig.GetStatus(ctx, b)
+}
+
+func extractStatus(doc extractor.Document) (*PizzaStatus, error) {
+	// The browser renders the JSON API response as text in the page body.
+	// doc.Text() returns InnerText of the html element, which should
+	// contain the raw JSON (possibly with extra browser UI text).
+	body, err := doc.Text()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get page text: %w", err)
+	}
+
+	jsonStr, err := findJSON(body)
+	if err != nil {
+		// Fall back to Content() which returns the full HTML — the JSON
+		// will be embedded in it (e.g. inside a <pre> tag in Chromium).
+		html, herr := doc.Content()
+		if herr != nil {
+			return nil, fmt.Errorf("failed to extract JSON from text (%w) and failed to get HTML: %w", err, herr)
+		}
+		jsonStr, err = findJSON(html)
+		if err != nil {
+			return nil, fmt.Errorf("no valid JSON found in API response: %w", err)
+		}
+	}
+
+	var resp dashboardResponse
+	if err := json.Unmarshal([]byte(jsonStr), &resp); err != nil {
+		return nil, fmt.Errorf("failed to parse dashboard response: %w", err)
+	}
+
+	if !resp.Success {
+		return nil, fmt.Errorf("API returned success=false")
+	}
+
+	return resp.toPizzaStatus(), nil
+}
+
+// findJSON extracts a JSON object from a string by matching braces.
+func findJSON(s string) (string, error) {
+	start := strings.Index(s, "{")
+	if start == -1 {
+		return "", fmt.Errorf("no opening brace found")
+	}
+
+	depth := 0
+	inString := false
+	escape := false
+
+	for i := start; i < len(s); i++ {
+		ch := s[i]
+
+		if escape {
+			escape = false
+			continue
+		}
+
+		if ch == '\\' && inString {
+			escape = true
+			continue
+		}
+
+		if ch == '"' {
+			inString = !inString
+			continue
+		}
+
+		if inString {
+			continue
+		}
+
+		switch ch {
+		case '{':
+			depth++
+		case '}':
+			depth--
+			if depth == 0 {
+				return s[start : i+1], nil
+			}
+		}
+	}
+
+	return "", fmt.Errorf("no matching closing brace found")
+}
+
+// dashboardResponse is the raw API response from /api/dashboard-data.
+type dashboardResponse struct {
+	Success      bool                  `json:"success"`
+	OverallIndex int                   `json:"overall_index"`
+	DefconLevel  int                   `json:"defcon_level"`
+	Data         []dashboardRestaurant `json:"data"`
+	Events       []dashboardEvent      `json:"events"`
+}
+
+type dashboardRestaurant struct {
+	PlaceID           string  `json:"place_id"`
+	Name              string  `json:"name"`
+	Address           string  `json:"address"`
+	CurrentPopularity int     `json:"current_popularity"`
+	PercentageOfUsual *int    `json:"percentage_of_usual"`
+	IsSpike           bool    `json:"is_spike"`
+	SpikeMagnitude    *string `json:"spike_magnitude"`
+	DataSource        string  `json:"data_source"`
+	DataFreshness     string  `json:"data_freshness"`
+	IsClosedNow       bool    `json:"is_closed_now"`
+}
+
+type dashboardEvent struct {
+	Name       string `json:"name"`
+	MinutesAgo int    `json:"minutes_ago"`
+}
+
+func (r dashboardResponse) toPizzaStatus() *PizzaStatus {
+	status := &PizzaStatus{
+		DoughconLevel: DoughconLevel(r.DefconLevel),
+		OverallIndex:  r.OverallIndex,
+		FetchedAt:     time.Now(),
+	}
+	status.DoughconLabel = status.DoughconLevel.Label()
+
+	for _, d := range r.Data {
+		rest := Restaurant{
+			Name:              d.Name,
+			CurrentPopularity: d.CurrentPopularity,
+			PercentOfUsual:    d.PercentageOfUsual,
+			IsSpike:           d.IsSpike,
+			IsClosed:          d.IsClosedNow,
+			DataFreshness:     d.DataFreshness,
+		}
+		if d.SpikeMagnitude != nil {
+			rest.SpikeMagnitude = *d.SpikeMagnitude
+		}
+		status.Restaurants = append(status.Restaurants, rest)
+	}
+
+	for _, e := range r.Events {
+		status.Events = append(status.Events, Event{
+			Name:       e.Name,
+			MinutesAgo: e.MinutesAgo,
+		})
+	}
+
+	return status
+}