refactor: make it easier to setup local development with a localdev t…

…arget

Makefile

@@ -18,17 +18,26 @@ build-MainFunction: static/style.css static/main.js
 validate:
 	aws cloudformation validate-template --template-body file://template.yml
 
-static/style.css: static/app.css
-	npx esbuild --bundle static/app.css --minify --outfile=static/main.css
-
-static/main.js: static/app.js
-	npx esbuild --bundle static/app.js --minify --outfile=static/main.js
-
 destroy:
 	aws cloudformation delete-stack --stack-name $(STACK)
 
 sam-tail-logs:
 	sam logs --stack-name $(STACK) --tail
 
+awsclitail:
+	aws logs tail /aws/lambda/ltabus --follow
+
+static/style.css: static/app.css
+	    npx esbuild --bundle static/app.css --minify --outfile=static/main.css
+
+static/main.js: static/app.js
+	    npx esbuild --bundle static/app.js --minify --outfile=static/main.js
+
+installgin:
+	go install github.com/codegangsta/gin@latest
+
+localdev: installgin static/style.css static/main.js
+	gin
+
 clean:
 	rm -rf main gin-bin static/main.*

go.mod

@@ -14,4 +14,5 @@ require (
 require (
 	github.com/aws/aws-lambda-go v1.37.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/stretchr/testify v1.8.1 // indirect
 )

go.sum

@@ -54,10 +54,15 @@ github.com/smartystreets/assertions v1.0.0/go.mod h1:kHHU4qYBaI3q23Pp3VPrmWhuIUr
 github.com/smartystreets/go-aws-auth v0.0.0-20180515143844-0c1422d1fdb9/go.mod h1:SnhjPscd9TpLiy1LpzGSKh3bXCfxxXuqd9xmQJy3slM=
 github.com/smartystreets/gunit v1.0.0/go.mod h1:qwPWnhz6pn0NnRBP++URONOVyNkPyr4SauJk4cUOwJs=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.2 h1:4jaiDzPyXQvSd7D0EjG45355tLlV3VOECpq10pLC+8s=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/tj/assert v0.0.0-20171129193455-018094318fb0/go.mod h1:mZ9/Rh9oLWpLLDRpvE+3b7gP/C2YyLFYxNmcLnPTMe0=
 github.com/tj/assert v0.0.3 h1:Df/BlaZ20mq6kuai7f5z2TvPFiwC3xaWJSDQNiIS3Rk=
 github.com/tj/assert v0.0.3/go.mod h1:Ne6X72Q+TB1AteidzQncjw9PabbMp4PBMZ1k+vd1Pvk=
@@ -109,3 +114,4 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -315,7 +315,6 @@ func ms(d time.Duration) int {
 	return int(d / time.Millisecond)
 }
 
-// Point is a geo co-ordinate
 type Point struct {
 	lat float64
 	lng float64
@@ -330,7 +329,6 @@ type BusStop struct {
 	Longitude   float64 `json:"Longitude"`
 }
 
-// BusStops are many bus stops
 type BusStops []BusStop
 
 func loadBusJSON(jsonfile string) (bs BusStops, err error) {
@@ -377,7 +375,6 @@ func styleBusStop(busStopID string) (style template.CSS) {
 	return template.CSS(fmt.Sprintf("background-color: #%.3x; padding: 0.2em", md5.Sum(data)))
 }
 
-// distance calculates the distance between two points
 func (p Point) distance(p2 Point) float64 {
 	latd := p2.lat - p.lat
 	lngd := p2.lng - p.lng