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fizzbuzz.go
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fizzbuzz.go
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package main
import (
"encoding/json"
"flag"
"fmt"
"html"
"html/template"
"io/ioutil"
"log"
"net"
"net/http"
"os"
"sort"
"strconv"
"strings"
"time"
)
// Flag inputs
var portNumber = flag.Int("port", 9100, "port to bind to (default 9100)")
//var useTemplates = flag.Bool("tmpl", false, "use external templates (default false)")
const dataPath = "data/"
const tmplPath = "tmpl/"
const demoVersion = false
const returnLimit = 50
// Types *NB* names must be uppercase to appear in JSON
type Project struct {
Id int64
Name string
Open bool
Time int64
}
type ProjectByTimeDesc []Project
func (this ProjectByTimeDesc) Len() int {
return len(this)
}
func (this ProjectByTimeDesc) Less(i, j int) bool {
return this[i].Time > this[j].Time
}
func (this ProjectByTimeDesc) Swap(i, j int) {
this[i], this[j] = this[j], this[i]
}
type Issue struct {
Id int64
Projectid int64
Name string
Open bool
Time int64
}
type IssueByTimeDesc []Issue
func (this IssueByTimeDesc) Len() int {
return len(this)
}
func (this IssueByTimeDesc) Less(i, j int) bool {
return this[i].Time > this[j].Time
}
func (this IssueByTimeDesc) Swap(i, j int) {
this[i], this[j] = this[j], this[i]
}
type Note struct {
Id int64
Issueid int64
Content string
Time int64
}
type NoteByTimeDesc []Note
func (this NoteByTimeDesc) Len() int {
return len(this)
}
func (this NoteByTimeDesc) Less(i, j int) bool {
return this[i].Time > this[j].Time
}
func (this NoteByTimeDesc) Swap(i, j int) {
this[i], this[j] = this[j], this[i]
}
type Response struct {
Success bool
Message string
Id int64
}
var projects = []Project{}
var issues = []Issue{}
var notes = []Note{}
func loadProjects() error {
filename := dataPath + "project.json"
b, _ := ioutil.ReadFile(filename)
err := json.Unmarshal(b, &projects)
return err
}
func loadIssues() error {
filename := dataPath + "issue.json"
b, _ := ioutil.ReadFile(filename)
err := json.Unmarshal(b, &issues)
return err
}
func loadNotes() error {
filename := dataPath + "note.json"
b, _ := ioutil.ReadFile(filename)
err := json.Unmarshal(b, ¬es)
return err
}
// exists returns whether the given file or directory exists or not
func fileExists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
func loadData() {
err := loadProjects()
err2 := loadIssues()
err3 := loadNotes()
if err != nil {
log.Fatal("loadProjects: Unable to load. Was the data file removed? ")
}
if err2 != nil {
log.Fatal("loadIssues: Unable to load. Was the data file removed? ")
}
if err3 != nil {
log.Fatal("loadNotes: Unable to load. Was the data file removed? ")
}
}
func writeProjects() error {
filename := dataPath + "project.json"
t, _ := json.Marshal(projects)
err := ioutil.WriteFile(filename, t, 0600)
return err
}
func writeIssues() error {
filename := dataPath + "issue.json"
t, _ := json.Marshal(issues)
err := ioutil.WriteFile(filename, t, 0600)
return err
}
func writeNotes() error {
filename := dataPath + "note.json"
t, _ := json.Marshal(notes)
err := ioutil.WriteFile(filename, t, 0600)
return err
}
func writeData() {
err := writeProjects()
err2 := writeIssues()
err3 := writeNotes()
if err != nil {
log.Fatal("writeProjects: Unable to write. ", err)
}
if err2 != nil {
log.Fatal("writeIssues: Unable to write. ", err2)
}
if err3 != nil {
log.Fatal("writeNotes: Unable to write. ", err3)
}
}
func setup() {
// If the data directory does not exist lets create it
// and then populate our data
_, err := os.Stat(dataPath)
if err != nil {
mkerr := os.Mkdir(dataPath, 0700)
if mkerr != nil {
fmt.Fprintf(os.Stderr, "ERROR: Was not able to create directory 'data' in current path.\n")
os.Exit(2)
}
writeData()
}
loadData()
}
var templates = template.Must(template.ParseFiles(tmplPath+"base.html", tmplPath+"styles.css"))
// View handlers below
func baseHandler(w http.ResponseWriter, r *http.Request) {
var loadtmpl = "base.html"
templates.ExecuteTemplate(w, loadtmpl, "")
/*if *useTemplates == true {
body, err := ioutil.ReadFile(tmplPath + "base.html")
if err != nil {
fmt.Fprintf(os.Stderr, "ERROR: Was not able to read template base.html\n")
os.Exit(2)
}
w.Header().Set("Content-Type", "text/html")
fmt.Fprintf(w, string(body))
} else {
w.Header().Set("Content-Type", "text/html")
fmt.Fprintf(w, basetemplate)
}*/
}
func cssHandler(w http.ResponseWriter, r *http.Request) {
var loadtmpl = "styles.css"
w.Header().Set("Content-Type", "text/css")
templates.ExecuteTemplate(w, loadtmpl, "")
}
// Returns all projects
func allprojectsHandler(w http.ResponseWriter, r *http.Request) {
includeclosed, err := strconv.ParseBool(r.FormValue("c"))
if err != nil {
includeclosed = false
}
var proj = []Project{}
for i := range projects {
if includeclosed == true || projects[i].Open == true {
proj = append(proj, projects[i])
}
}
sort.Sort(ProjectByTimeDesc(proj))
var projLimit = []Project{}
if len(proj) < returnLimit {
projLimit = proj
} else {
projLimit = proj[:returnLimit]
}
t, _ := json.Marshal(projLimit)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Returns all issues
func allissuesHandler(w http.ResponseWriter, r *http.Request) {
includeclosed, err := strconv.ParseBool(r.FormValue("c"))
if err != nil {
includeclosed = false
}
var iss = []Issue{}
for i := range issues {
if includeclosed == true || issues[i].Open == true {
iss = append(iss, issues[i])
}
}
sort.Sort(IssueByTimeDesc(iss))
var issLimit = []Issue{}
if len(iss) < returnLimit {
issLimit = iss
} else {
issLimit = iss[:returnLimit]
}
t, _ := json.Marshal(issLimit)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Returns all issues for supplied projectid
func issuesbyprojectHandler(w http.ResponseWriter, r *http.Request) {
var iss = []Issue{}
includeclosed, err := strconv.ParseBool(r.FormValue("c"))
if err != nil {
includeclosed = false
}
id, err := strconv.ParseInt(r.FormValue("q"), 10, 64)
if err == nil {
for i := range issues {
if issues[i].Projectid == id && (includeclosed == true || issues[i].Open == true) {
iss = append(iss, issues[i])
}
}
sort.Sort(IssueByTimeDesc(iss))
}
t, _ := json.Marshal(iss)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Returns all notes for the supplied issueid
func notesbyissueHandler(w http.ResponseWriter, r *http.Request) {
var iss = []Note{}
id, err := strconv.ParseInt(r.FormValue("q"), 10, 64)
if err == nil {
for i := range notes {
if notes[i].Issueid == id {
iss = append(iss, notes[i])
}
}
sort.Sort(NoteByTimeDesc(iss))
}
t, _ := json.Marshal(iss)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// This also needs to search notes inside the issues to be really
// effective
// by default this is an AND search
func issuessearchHandler(w http.ResponseWriter, r *http.Request) {
var iss = []Issue{}
term := r.FormValue("q")
includeclosed, err := strconv.ParseBool(r.FormValue("c"))
if err != nil {
includeclosed = false
}
var words = strings.Split(strings.ToLower(term), " ")
for i := range issues {
match := true
noteText := ""
// Get all of the notes for this issue
for j := range notes {
if notes[j].Issueid == issues[i].Id {
noteText = noteText + notes[j].Content
}
}
// Get the project name for this issue
projectName := ""
for k := range projects {
if projects[k].Id == issues[i].Projectid && (includeclosed == true || projects[k].Open == true) {
projectName = projects[k].Name
}
}
for _, word := range words {
check := strings.ToLower(fmt.Sprintf("%s %s %s #%d", projectName, noteText, issues[i].Name, issues[i].Id))
if strings.Contains(check, word) == false {
match = false
}
}
if match == true && (includeclosed == true || issues[i].Open == true) {
iss = append(iss, issues[i])
}
}
sort.Sort(IssueByTimeDesc(iss))
var issLimit = []Issue{}
if len(iss) < returnLimit {
issLimit = iss
} else {
issLimit = iss[:returnLimit]
}
t, _ := json.Marshal(issLimit)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Search over the projects OR style
// The reason being we want to display any name thats even
// close to being what we want
func projectssearchHandler(w http.ResponseWriter, r *http.Request) {
var proj = []Project{}
term := r.FormValue("q")
includeclosed, err := strconv.ParseBool(r.FormValue("c"))
if err != nil {
includeclosed = false
}
var words = strings.Split(strings.ToLower(term), " ")
// for each project
// get all of its issues
// and all of that issues notes
for i := range projects {
if includeclosed == true || projects[i].Open == true {
projectid := projects[i].Id
check := projects[i].Name
match := false
for j := range issues {
if issues[j].Projectid == projectid && (includeclosed == true || issues[j].Open == true) {
issueid := issues[j].Id
check = check + fmt.Sprintf("%s #%d", issues[j].Name, issues[j].Id)
for k := range notes {
if notes[k].Issueid == issueid && issues[j].Open == true {
check = check + notes[k].Content
}
}
}
}
check = strings.ToLower(check)
for _, word := range words {
if strings.Contains(check, word) == true {
match = true
}
}
if match == true {
proj = append(proj, projects[i])
}
}
}
sort.Sort(ProjectByTimeDesc(proj))
var projLimit = []Project{}
if len(proj) < returnLimit {
projLimit = proj
} else {
projLimit = proj[:returnLimit]
}
t, _ := json.Marshal(projLimit)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Generic method for saving a note
// it generates the new ID itself
func savenote(n Note) {
var topid int64
topid = -1
for i := range notes {
if notes[i].Id > topid {
topid = notes[i].Id
}
}
topid = topid + 1
n.Id = topid
notes = append(notes, n)
go writeNotes()
}
// Saves a note when supplied valid details
// also updates its issue so it pops to the top of searches
func savenoteHandler(w http.ResponseWriter, r *http.Request) {
response := Response{true, "", 0}
issueid, err := strconv.ParseInt(r.FormValue("issueid"), 10, 64)
body := html.EscapeString(r.FormValue("body"))
// Validations
if strings.Trim(body, " ") == "" {
response.Success = false
response.Message = "Content must not be empty."
}
if err != nil {
response.Success = false
response.Message = "IssueID must be integer."
}
if response.Success == true {
// Get the related issue and update its time
// also set it to be open
for i := range issues {
if issues[i].Id == issueid {
issues[i].Time = int64(time.Now().Unix())
issues[i].Open = true
}
}
savenote(Note{0, issueid, body, int64(time.Now().Unix())})
go writeIssues()
}
t, _ := json.Marshal(response)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Saves an issue when supplied valid details
// gets new ID based on the current highest ID
func saveissueHandler(w http.ResponseWriter, r *http.Request) {
response := Response{true, "", 0}
projectid, err := strconv.ParseInt(r.FormValue("projectid"), 10, 64)
issuename := html.EscapeString(r.FormValue("issuename"))
issuecontent := html.EscapeString(r.FormValue("issuecontent"))
// Validations
if strings.Trim(issuename, " ") == "" {
response.Success = false
response.Message = "Issue name must not be empty."
}
if strings.Trim(issuecontent, " ") == "" {
response.Success = false
response.Message = "Issue content must not be empty."
}
if err != nil {
response.Success = false
response.Message = "ProjectID must be integer."
}
// If we are the demo version check we dont have 5 issues already
if demoVersion == true && len(issues) >= 5 {
response.Success = false
response.Message = "Demo version is limited to 5 issues."
}
if response.Success == true {
var topid int64
topid = -1
for i := range issues {
if issues[i].Id > topid {
topid = issues[i].Id
}
}
topid = topid + 1
issues = append(issues, Issue{topid, projectid, issuename, true, int64(time.Now().Unix())})
response.Id = topid
// Save the note as well using the ID we have here
savenote(Note{0, topid, issuecontent, int64(time.Now().Unix())})
go writeIssues()
}
t, _ := json.Marshal(response)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Saves a project when supplied a name
// gets new ID based on the current highest ID
func saveprojectHandler(w http.ResponseWriter, r *http.Request) {
response := Response{true, "", 0}
projectname := html.EscapeString(r.FormValue("projectname"))
// Validations
if strings.Trim(projectname, " ") == "" {
response.Success = false
response.Message = "Project Name must not be empty."
}
for i := range projects {
if projects[i].Name == projectname && projects[i].Open == true {
response.Success = false
response.Message = "Project Name must not already exist."
}
}
// If we are the demo version check we dont have 1 project already
if demoVersion == true && len(projects) >= 1 {
response.Success = false
response.Message = "Demo version is limited to 1 project."
}
// If we have passed validation actually save it
if response.Success == true {
var topid int64
topid = -1
for i := range projects {
if projects[i].Id > topid {
topid = projects[i].Id
}
}
topid = topid + 1
projects = append(projects, Project{topid, projectname, true, int64(time.Now().Unix())})
go writeProjects()
}
t, err := json.Marshal(response)
if err != nil {
fmt.Printf(err.Error())
}
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Closes down issues by setting the appropiate id to closed
func closeissueHandler(w http.ResponseWriter, r *http.Request) {
response := Response{true, "", 0}
issueid, err := strconv.ParseInt(r.FormValue("issueid"), 10, 64)
// Validations
if err != nil {
response.Success = false
response.Message = "IssueID must be integer."
}
if response.Success == true {
for i := range issues {
if issues[i].Id == issueid {
issues[i].Open = false
}
}
go writeIssues()
}
t, _ := json.Marshal(response)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// Closes down projects by setting it to closed and
// all of its childen issues
func closeprojectHandler(w http.ResponseWriter, r *http.Request) {
response := Response{true, "", 0}
projectid, err := strconv.ParseInt(r.FormValue("projectid"), 10, 64)
// Validations
if err != nil {
response.Success = false
response.Message = "ProjectID must be integer."
}
if response.Success == true {
for i := range projects {
if projects[i].Id == projectid {
projects[i].Open = false
}
}
for i := range issues {
if issues[i].Projectid == projectid {
issues[i].Open = false
}
}
go writeProjects()
go writeIssues()
}
t, _ := json.Marshal(response)
w.Header().Set("Content-Type", "application/json")
fmt.Fprintf(w, string(t))
}
// TODO investigate if this is broken
// Should display what ips we are listening on but appears to have
// issues as it always displays things like 127.0.1.1 which seems
// odd.... NB the extra 1
func displayListening() {
name, err := os.Hostname()
if err == nil {
addrs, err := net.LookupHost(name)
if err == nil {
for _, a := range addrs {
log.Println("Listening on " + a)
}
}
}
}
func main() {
flag.Parse()
setup()
displayListening()
http.HandleFunc("/allprojects/", allprojectsHandler)
http.HandleFunc("/allissues/", allissuesHandler)
http.HandleFunc("/issuesbyproject/", issuesbyprojectHandler)
http.HandleFunc("/notesbyissue/", notesbyissueHandler)
http.HandleFunc("/issuessearch/", issuessearchHandler)
http.HandleFunc("/projectssearch/", projectssearchHandler)
http.HandleFunc("/savenote/", savenoteHandler)
http.HandleFunc("/saveissue/", saveissueHandler)
http.HandleFunc("/saveproject/", saveprojectHandler)
http.HandleFunc("/closeissue/", closeissueHandler)
http.HandleFunc("/closeproject/", closeprojectHandler)
http.HandleFunc("/css/", cssHandler)
http.HandleFunc("/", baseHandler)
log.Println(fmt.Sprintf("Ready to serve requests on port %d", *portNumber))
http.ListenAndServe(fmt.Sprintf(":%d", *portNumber), nil)
}