package repos

import (
	"context"
	"time"

	"gitmanager/internal/git"
)

// Detail is the enriched view of a single repository shown in the detail panel.
// It embeds the cached State and adds data fetched on demand via the git
// boundary (all read-only — AGENT.md §1.3).
type Detail struct {
	State
	Branches      []git.Branch `json:"branches"`
	Commits       []git.Commit `json:"commits"`
	RemoteDetails []git.Remote `json:"remoteDetails"`
}

// Get returns the cached State for a repo path, or false if it is not indexed.
func (i *Index) Get(path string) (State, bool) {
	i.mu.RLock()
	defer i.mu.RUnlock()
	s, ok := i.byKey[path]
	return s, ok
}

// BuildDetail enriches a cached State with branches, recent commits, and remote
// URLs. Errors on the enriching calls are non-fatal: whatever succeeds is
// returned, and the partial failure is recorded on Detail.Error.
func BuildDetail(ctx context.Context, g *git.CLI, base State) Detail {
	ctx, cancel := context.WithTimeout(ctx, 20*time.Second)
	defer cancel()

	d := Detail{State: base}

	if branches, err := g.LocalBranches(ctx, base.Path); err == nil {
		d.Branches = branches
	} else {
		d.Error = err.Error()
	}

	if commits, err := g.RecentCommits(ctx, base.Path, 20); err == nil {
		d.Commits = commits
	} else if d.Error == "" {
		d.Error = err.Error()
	}

	if remotes, err := g.RemoteDetails(ctx, base.Path); err == nil {
		d.RemoteDetails = remotes
	} else if d.Error == "" {
		d.Error = err.Error()
	}

	return d
}