Add custom logger with source location tracking and remove verbose database logs

- Create internal/logger package with Logger wrapper around slog
- Logger automatically adds source file, line number, and function name to all log entries
- Use golang.org/x/term to properly detect if stdout is a terminal
- Replace all slog.Logger usage with logger.Logger throughout the codebase
- Remove verbose logging from database GetStats() method
- Update all constructors and dependencies to use the new logger

internal/database/database.go

@@ -5,12 +5,12 @@ import (
 	"database/sql"
 	_ "embed"
 	"fmt"
-	"log/slog"
 	"os"
 	"path/filepath"
 	"time"
 
 	"git.eeqj.de/sneak/routewatch/internal/config"
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/pkg/asinfo"
 	"github.com/google/uuid"
 	_ "github.com/mattn/go-sqlite3" // CGO SQLite driver
@@ -24,12 +24,12 @@ const dirPermissions = 0750 // rwxr-x---
 // Database manages the SQLite database connection and operations.
 type Database struct {
 	db     *sql.DB
-	logger *slog.Logger
+	logger *logger.Logger
 	path   string
 }
 
 // New creates a new database connection and initializes the schema.
-func New(cfg *config.Config, logger *slog.Logger) (*Database, error) {
+func New(cfg *config.Config, logger *logger.Logger) (*Database, error) {
 	dbPath := filepath.Join(cfg.GetStateDir(), "db.sqlite")
 
 	// Log database path
@@ -348,28 +348,24 @@ func (d *Database) GetStats() (Stats, error) {
 	var stats Stats
 
 	// Count ASNs
-	d.logger.Info("Counting ASNs")
 	err := d.queryRow("SELECT COUNT(*) FROM asns").Scan(&stats.ASNs)
 	if err != nil {
 		return stats, err
 	}
 
 	// Count prefixes
-	d.logger.Info("Counting prefixes")
 	err = d.queryRow("SELECT COUNT(*) FROM prefixes").Scan(&stats.Prefixes)
 	if err != nil {
 		return stats, err
 	}
 
 	// Count IPv4 and IPv6 prefixes
-	d.logger.Info("Counting IPv4 prefixes")
 	const ipVersionV4 = 4
 	err = d.queryRow("SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV4).Scan(&stats.IPv4Prefixes)
 	if err != nil {
 		return stats, err
 	}
 
-	d.logger.Info("Counting IPv6 prefixes")
 	const ipVersionV6 = 6
 	err = d.queryRow("SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV6).Scan(&stats.IPv6Prefixes)
 	if err != nil {
@@ -377,14 +373,12 @@ func (d *Database) GetStats() (Stats, error) {
 	}
 
 	// Count peerings
-	d.logger.Info("Counting peerings")
 	err = d.queryRow("SELECT COUNT(*) FROM asn_peerings").Scan(&stats.Peerings)
 	if err != nil {
 		return stats, err
 	}
 
 	// Get database file size
-	d.logger.Info("Getting database file size")
 	fileInfo, err := os.Stat(d.path)
 	if err != nil {
 		d.logger.Warn("Failed to get database file size", "error", err)
@@ -393,7 +387,5 @@ func (d *Database) GetStats() (Stats, error) {
 		stats.FileSizeBytes = fileInfo.Size()
 	}
 
-	d.logger.Info("Stats collection complete")
-
 	return stats, nil
 }

internal/database/slowquery.go

@@ -3,14 +3,15 @@ package database
 import (
 	"context"
 	"database/sql"
-	"log/slog"
 	"time"
+
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 )
 
 const slowQueryThreshold = 50 * time.Millisecond
 
 // logSlowQuery logs queries that take longer than slowQueryThreshold
-func logSlowQuery(logger *slog.Logger, query string, start time.Time) {
+func logSlowQuery(logger *logger.Logger, query string, start time.Time) {
 	elapsed := time.Since(start)
 	if elapsed > slowQueryThreshold {
 		logger.Debug("Slow query", "query", query, "duration", elapsed)
@@ -47,7 +48,7 @@ func (d *Database) exec(query string, args ...interface{}) error {
 // loggingTx wraps sql.Tx to log slow queries
 type loggingTx struct {
 	*sql.Tx
-	logger *slog.Logger
+	logger *logger.Logger
 }
 
 // QueryRow wraps sql.Tx.QueryRow to log slow queries