From 355e07cf5312d3f9ff139a4b882c87fa475d13f7 Mon Sep 17 00:00:00 2001
From: Dan Buch <daniel.buch@gmail.com>
Date: Sun, 17 Dec 2017 22:03:46 -0500
Subject: [PATCH] More whereing and whening

---
 wherewhen/cmd/wherewhen/main.go | 141 ++++++++++++++++++++++++++------
 1 file changed, 114 insertions(+), 27 deletions(-)

diff --git a/wherewhen/cmd/wherewhen/main.go b/wherewhen/cmd/wherewhen/main.go
index 63831cb..e9a2e66 100644
--- a/wherewhen/cmd/wherewhen/main.go
+++ b/wherewhen/cmd/wherewhen/main.go
@@ -36,6 +36,10 @@ var (
 	}
 )
 
+const (
+	dateFmt = "2006-01-02"
+)
+
 func main() {
 	flag.Parse()
 
@@ -72,27 +76,44 @@ func main() {
 		log.Fatalf("Unable to retrieve next %d events. %v", maxResults, err)
 	}
 
-	// days := generateDays(startT, endT)
-	found := []*miniEvent{}
+	log.Printf("found %d events", len(events.Items))
+	log.Printf("generating days between %v and %v", startT, endT)
+
+	days := generateDays(startT, endT)
+	foundEvents := []*lilEvent{}
 	defaultLocation := *defaultLocationFlag
 
+	log.Printf("generated %d days between %v and %v", len(days), startT, endT)
+
 	if len(events.Items) > 0 {
 		for _, i := range events.Items {
 			var (
-				startTime string
-				endTime   string
+				startDate string
+				endDate   string
 			)
+
 			if i.Start.DateTime != "" {
-				startTime = i.Start.DateTime
-				endTime = i.End.DateTime
+				startT, err := time.Parse(time.RFC3339, i.Start.DateTime)
+				if err != nil {
+					log.Printf("error parsing start date: %v", err)
+					continue
+				}
+
+				endT, err := time.Parse(time.RFC3339, i.End.DateTime)
+				if err != nil {
+					log.Printf("error parsing end date: %v", err)
+					continue
+				}
+				startDate = startT.Format(dateFmt)
+				endDate = endT.Format(dateFmt)
 			} else {
-				startTime = i.Start.Date
-				endTime = i.End.Date
+				startDate = i.Start.Date
+				endDate = i.End.Date
 			}
 
-			evt := &miniEvent{
-				Start:    startTime,
-				End:      endTime,
+			evt := &lilEvent{
+				Start:    startDate,
+				End:      endDate,
 				Location: defaultLocation,
 				Summary:  strings.ToLower(strings.TrimSpace(i.Summary)),
 			}
@@ -115,21 +136,33 @@ func main() {
 			}
 			evt.Location = loc
 
-			found = append(found, evt)
+			if evt.Start == evt.End {
+				log.Printf("skipping same-day event on %s", evt.Start)
+				continue
+			}
+			foundEvents = append(foundEvents, evt)
 		}
 	} else {
-		fmt.Fprintf(os.Stderr, "No events found.\n")
+		log.Println("No events found")
 	}
 
-	// TODO: sort found events
+	for _, day := range days {
+		log.Printf("working on date %v", day)
+		for _, evt := range foundEvents {
+			log.Printf("checking if %s is in range %s %s", day.Date, evt.Start, evt.End)
+			if evt.HasDate(day.Date) {
+				day.Location = evt.Location
+			}
+		}
+	}
 
-	for _, evt := range found {
-		asJson, err := json.Marshal(evt)
+	for _, day := range days {
+		asJson, err := json.Marshal(day)
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
+			log.Printf("ERROR: %v", err)
 			continue
 		}
-		fmt.Printf("%s\n", string(asJson))
+		fmt.Println(string(asJson))
 	}
 }
 
@@ -195,15 +228,69 @@ func saveToken(file string, token *oauth2.Token) {
 	json.NewEncoder(f).Encode(token)
 }
 
-type miniEvent struct {
-	Start     string `json:"start"`
-	StartDate string `json:"start_date"`
-	End       string `json:"end"`
-	EndDate   string `json:"end_date"`
-	Location  string `json:"loc"`
-	Summary   string `json:"summ"`
+type lilEvent struct {
+	Start    string `json:"start"`
+	End      string `json:"end"`
+	Location string `json:"loc"`
+	Summary  string `json:"summ"`
+}
+
+func (e *lilEvent) HasDate(d string) bool {
+	if e.Start == d || e.End == d {
+		log.Printf("match for %s in %s or %s", d, e.Start, e.End)
+		return true
+	}
+
+	dT, err := time.Parse(dateFmt, d)
+	if err != nil {
+		log.Printf("ERROR: %v", err)
+		return false
+	}
+
+	dr := e.dateRange()
+	return dr[0].Before(dT) && dr[1].After(dT)
+}
+
+func (e *lilEvent) dateRange() []time.Time {
+	ret := []time.Time{}
+	for _, t := range []string{e.Start, e.End} {
+		parsedDate, err := time.Parse(dateFmt, t)
+		if err != nil {
+			log.Printf("ERROR: %v", err)
+			ret = append(ret, time.Time{})
+			continue
+		}
+		ret = append(ret, parsedDate)
+	}
+
+	return ret
+}
+
+type lilDay struct {
+	Date     string `json:"date"`
+	Location string `json:"loc"`
 }
 
-func generateDays(startT, endT time.Time) []string {
-	return []string{}
+func generateDays(startT, endT time.Time) []*lilDay {
+	defaultLocation := *defaultLocationFlag
+	days := []*lilDay{
+		{
+			Date:     startT.Format(dateFmt),
+			Location: defaultLocation,
+		},
+	}
+
+	curT := startT
+	for {
+		if curT.After(endT) {
+			return days
+		}
+
+		days = append(days, &lilDay{
+			Date:     curT.Format(dateFmt),
+			Location: defaultLocation,
+		})
+
+		curT = curT.Add(24 * time.Hour)
+	}
 }