pama: define the entity models

Define the entity models for the patch management. Add a Project and
Commit struct and implement the Stringer interface for both.

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 93 insertions, 0 deletions

diff --git a/lib/pama/models/commit.go b/lib/pama/models/commit.go
new file mode 100644
index 00000000..4cd06b4b
--- /dev/null
+++ b/lib/pama/models/commit.go
@@ -0,0 +1,93 @@
+package models
+
+import (
+	"fmt"
+	"strings"
+)
+
+const (
+	Untracked = "untracked"
+)
+
+func NewCommit(r RevisionController, id, tag string) Commit {
+	return Commit{
+		ID:        id,
+		Subject:   r.Subject(id),
+		Author:    r.Author(id),
+		Date:      r.Date(id),
+		MessageId: "",
+		Tag:       tag,
+	}
+}
+
+func (c Commit) Untracked() bool {
+	return c.Tag == Untracked
+}
+
+func (c Commit) Info() string {
+	s := []string{}
+	if c.Subject == "" {
+		s = append(s, "(no subject)")
+	} else {
+		s = append(s, c.Subject)
+	}
+	if c.Author != "" {
+		s = append(s, c.Author)
+	}
+	if c.Date != "" {
+		s = append(s, c.Date)
+	}
+	if c.MessageId != "" {
+		s = append(s, "<"+c.MessageId+">")
+	}
+	return strings.Join(s, ", ")
+}
+
+func (c Commit) String() string {
+	return fmt.Sprintf("%-6.6s %s", c.ID, c.Info())
+}
+
+type Commits []Commit
+
+func (h Commits) Tags() []string {
+	var tags []string
+	dedup := make(map[string]struct{})
+	for _, c := range h {
+		_, ok := dedup[c.Tag]
+		if ok {
+			continue
+		}
+		tags = append(tags, c.Tag)
+		dedup[c.Tag] = struct{}{}
+	}
+	return tags
+}
+
+func (h Commits) HasTag(t string) bool {
+	for _, c := range h {
+		if c.Tag == t {
+			return true
+		}
+	}
+	return false
+}
+
+func (h Commits) Lookup(id string) (Commit, bool) {
+	for _, c := range h {
+		if c.ID == id {
+			return c, true
+		}
+	}
+	return Commit{}, false
+}
+
+type CommitIDs []string
+
+func (c CommitIDs) Has(id string) bool {
+	for _, cid := range c {
+		if cid == id {
+			return true
+		}
+	}
+	return false
+}