1 files changed, 144 insertions, 0 deletions
diff --git a/projects/project.go b/projects/project.go
new file mode 100644
index 0000000..85239c9
--- /dev/null
+++ b/projects/project.go
@@ -0,0 +1,144 @@
+package projects
+
+import (
+	"encoding/json"
+	"html/template"
+	"log"
+	"math"
+	"os"
+	"path"
+	"strings"
+)
+
+type Link struct {
+	Title string
+	Href  string
+	Class string `json:",omitempty"`
+}
+
+type Project struct {
+	Name string `json:"-"`
+
+	Title       string
+	Description string
+	Shortdesc   string
+	GoGet       string `json:",omitempty"`
+	ReadmePath  string `json:",omitempty"`
+	Git         string `json:",omitempty"` // local git repo
+	License     string `json:",omitempty"`
+	Links       []Link
+	Tags        []string
+
+	dir             string        `json:"-"`
+	FormattedReadme template.HTML `json:"-"`
+}
+
+func LoadProject(name string) (p Project, err error) {
+	f, err := os.Open(name)
+	if err != nil {
+		return p, err
+	}
+	defer f.Close()
+
+	dec := json.NewDecoder(f)
+	if err := dec.Decode(&p); err != nil {
+		return p, err
+	}
+
+	p.dir = path.Dir(name)
+	p.formatReadme()
+	p.Name = strings.Split(path.Base(name), ".")[0]
+
+	return
+}
+
+type ProjectRepo struct {
+	Dir      string
+	Projects map[string]Project
+	Tags     map[string]map[string]struct{}
+	Tagcloud map[string]TagcloudElem
+}
+
+const TAGCLOUD_SIZE_CATEGORIES = 5
+
+type TagcloudElem struct {
+	Tag  string
+	Size int
+}
+
+func NewProjectRepo(dir string) *ProjectRepo {
+	return &ProjectRepo{
+		Dir:      dir,
+		Projects: make(map[string]Project),
+		Tags:     make(map[string]map[string]struct{}),
+		Tagcloud: make(map[string]TagcloudElem),
+	}
+}
+
+func (repo *ProjectRepo) updateTags() {
+	tags := make(map[string]map[string]struct{})
+	tagcounts := make(map[string]int)
+	maxcount := 0
+
+	for name, proj := range repo.Projects {
+		for _, tag := range proj.Tags {
+			if _, ok := tags[tag]; !ok {
+				tags[tag] = make(map[string]struct{})
+			}
+			tags[tag][name] = struct{}{}
+
+			tagcount := tagcounts[tag] + 1
+			tagcounts[tag] = tagcount
+			if tagcount > maxcount {
+				maxcount = tagcount
+			}
+		}
+	}
+
+	tagcloud := make(map[string]TagcloudElem)
+	if maxcount > 0 {
+		for tag, count := range tagcounts {
+			tagcloud[tag] = TagcloudElem{
+				Tag:  tag,
+				Size: int(math.Ceil((float64(count) / float64(maxcount)) * TAGCLOUD_SIZE_CATEGORIES)),
+			}
+		}
+	}
+
+	repo.Tags = tags
+	repo.Tagcloud = tagcloud
+}
+
+func (repo *ProjectRepo) ScanProjects() {
+	d, err := os.Open(repo.Dir)
+	if err != nil {
+		log.Printf("Failed scanning projects: Could not open dir: %s", err)
+		return
+	}
+	defer d.Close()
+
+	names, err := d.Readdirnames(0)
+	if err != nil {
+		log.Printf("Failed scanning projects: Could not readdir: %s", err)
+		return
+	}
+
+	projects := make(map[string]Project)
+
+	for _, fname := range names {
+		if path.Ext(fname) != ".json" {
+			continue
+		}
+
+		p, err := LoadProject(path.Join(repo.Dir, fname))
+		if err != nil {
+			log.Printf("Skip project file %s: %s", fname, err)
+			continue
+		}
+
+		projects[p.Name] = p
+	}
+
+	repo.Projects = projects
+	repo.updateTags()
+}