"""Display commit summary by week."""

import time

def summary(ui, repo, fs='', **opts):
    """Display commit summary by week"""
    buckets = []
    init_date = repo[0].date()[0]
    now = time.time()

    bucket_size = 7*24*60*60

    c = now
    while True:
        buckets.append(0)
        c = c - bucket_size
        if c <= init_date:
            break

    for rev in repo:
        ctx = repo[rev]
        timestamp = ctx.date()[0]

        changes = 0
        if opts['diffs']:
            for diff in ctx.diff():
                cs = len(diff.split("\n"))
                changes = changes + cs
        else:
            changes = len(ctx.files())

        d = now - timestamp
        bucket = int(d / bucket_size)

        buckets[bucket] = buckets[bucket]+changes

    buckets.reverse()
    ui.write(','.join(map(str, buckets)))
    ui.write('\n')



cmdtable = {
    "summary":
    (summary,
     [('f', 'files', None, 'count by changed files (fast, default)'),
      ('d', 'diffs', None, 'count by diffs (slow but more accurate)')], "[options]")
    }