var nodegit = require("nodegit")
var path = require("path")

// This code examines the diffs between a particular commit and all of its
// parents. Since this commit is not a merge, it only has one parent. This is
// similar to doing `git show`.

nodegit.Repository.open(path.resolve(__dirname, ".git"))
  .then(function (repo) {
    return repo.getMasterCommit()
  })
  .then(function (commit) {
    console.log("commit " + commit.sha())
    console.log(
      "Author:",
      commit.author().name() + " <" + commit.author().email() + ">"
    )
    console.log("Date:", commit.date())
    console.log("\n    " + commit.message())

    return commit.getDiff()
  })
  .done(function (diffList) {
    diffList.forEach(function (diff) {
      diff.patches().then(function (patches) {
        patches.forEach(function (patch) {
          patch.hunks().then(function (hunks) {
            hunks.forEach(function (hunk) {
              hunk.lines().then(function (lines) {
                console.log(lines)
                //console.log("diff", patch.oldFile().path(),
                //patch.newFile().path());
                //console.log(hunk.header().trim());
                //lines.forEach(function(line) {
                //console.log(String.fromCharCode(line.origin()) +
                //line.content().trim());
                //});
              })
            })
          })
        })
      })
    })
  })