b4nst/turbogit

package cmd

import (
    "time"

    "github.com/b4nst/turbogit/pkg/format"
    git "github.com/libgit2/git2go/v33"
)

type LogFilter func(c *git.Commit, co *format.CommitMessageOption) (keep, walk bool)

var PassThru LogFilter = func(c *git.Commit, co *format.CommitMessageOption) (bool, bool) { return true, true }

func ApplyFilters(c *git.Commit, co *format.CommitMessageOption, filters ...LogFilter) (keep, walk bool) {
    for _, filter := range filters {
        keep, walk = filter(c, co)
        if !walk || !keep {
            return
        }
    }
    return true, true
}

func Since(since *time.Time) LogFilter {
    if since == nil {
        return PassThru
    }

    return func(c *git.Commit, co *format.CommitMessageOption) (keep, walk bool) {
        d := c.Committer().When
        if d.Before(*since) {
            return false, false
        }
        return true, true
    }
}

func Until(until *time.Time) LogFilter {
    if until == nil {
        return PassThru
    }

    return func(c *git.Commit, co *format.CommitMessageOption) (keep, walk bool) {
        d := c.Committer().When
        if d.After(*until) {
            return false, true
        }
        return true, true
    }
}

func BreakingChange(is bool) LogFilter {
    return func(c *git.Commit, co *format.CommitMessageOption) (keep, walk bool) {
        return co.BreakingChanges == is, true
    }
}

func Type(types []format.CommitType) LogFilter {
    if len(types) <= 0 {
        return PassThru
    }

    mt := make(map[format.CommitType]bool, len(types))
    for _, ct := range types {
        mt[ct] = true
    }
    return func(c *git.Commit, co *format.CommitMessageOption) (keep, walk bool) {
        return mt[co.Ctype], true
    }
}

func Scope(scopes []string) LogFilter {
    if len(scopes) <= 0 {
        return PassThru
    }

    ms := make(map[string]bool, len(scopes))
    for _, s := range scopes {
        ms[s] = true
    }
    return func(c *git.Commit, co *format.CommitMessageOption) (keep, walk bool) {
        return ms[co.Scope], true
    }
}