package main

import (
	"net/http"
	"path/filepath"
	"os"
	"strings"
)

func handle_category_index(w http.ResponseWriter, r *http.Request) {
	data := make(map[string]any)

	project_name := r.PathValue("project_name")
	data["category_name"] = project_name
	entries, err := os.ReadDir(filepath.Join(config.Git.Root, project_name))

	category_name := r.PathValue("category_name")
	data["category_name"] = category_name
	entries, err := os.ReadDir(filepath.Join(config.Git.Root, category_name))

	if err != nil {
		_, _ = w.Write([]byte("Error listing repos: " + err.Error()))
		return
	}

	repos := []string{}
	for _, entry := range entries {
		this_name := entry.Name()
		if strings.HasSuffix(this_name, ".git") {
			repos = append(repos, strings.TrimSuffix(this_name, ".git"))
		}
	}
	data["repos"] = repos

	err = templates.ExecuteTemplate(w, "category_index", data)
	if err != nil {
		_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
		return
	}
}

package main

import (
	"bytes"
	"html/template"
	"net/http"
	"path/filepath"

	"github.com/go-git/go-git/v5"
	"github.com/go-git/go-git/v5/plumbing/object"
	"github.com/microcosm-cc/bluemonday"
	"github.com/yuin/goldmark"
)

func handle_repo_index(w http.ResponseWriter, r *http.Request) {
	data := make(map[string]any)
	// TODO: Sanitize path values

	project_name, repo_name := r.PathValue("project_name"), r.PathValue("repo_name")
	data["project_name"], data["repo_name"] = project_name, repo_name
	repo, err := git.PlainOpen(filepath.Join(config.Git.Root, project_name, repo_name+".git"))

	category_name, repo_name := r.PathValue("category_name"), r.PathValue("repo_name")
	data["category_name"], data["repo_name"] = category_name, repo_name
	repo, err := git.PlainOpen(filepath.Join(config.Git.Root, category_name, repo_name+".git"))

	if err != nil {
		_, _ = w.Write([]byte("Error opening repo: " + err.Error()))
		return
	}
	head, err := repo.Head()
	if err != nil {
		_, _ = w.Write([]byte("Error getting repo HEAD: " + err.Error()))
		return
	}
	data["ref"] = head.Name().Short()
	head_hash := head.Hash()
	commit_iter, err := repo.Log(&git.LogOptions{From: head_hash})
	if err != nil {
		_, _ = w.Write([]byte("Error getting repo commits: " + err.Error()))
		return
	}
	recent_commits := make([]*object.Commit, 0)
	defer commit_iter.Close()
	for range 3 {
		this_recent_commit, err := commit_iter.Next()
		if err != nil {
			_, _ = w.Write([]byte("Error getting a recent commit: " + err.Error()))
			return
		}
		recent_commits = append(recent_commits, this_recent_commit)
	}
	data["commits"] = recent_commits
	commit_object, err := repo.CommitObject(head_hash)
	if err != nil {
		_, _ = w.Write([]byte("Error getting commit object: " + err.Error()))
		return
	}
	tree, err := commit_object.Tree()
	if err != nil {
		_, _ = w.Write([]byte("Error getting file tree: " + err.Error()))
		return
	}
	readme_file, err := tree.File("README.md")
	if err != nil {
		data["readme"] = "There is no README for this repository."
	} else {
		readme_file_contents, err := readme_file.Contents()
		if err != nil {
			data["readme"] = "There is no README for this repository."
		} else {
			var readme_rendered_unsafe bytes.Buffer
			err = goldmark.Convert([]byte(readme_file_contents), &readme_rendered_unsafe)
			if err != nil {
				readme_rendered_unsafe.WriteString("Unable to render README: " + err.Error())
				return
			}
			readme_rendered_safe := template.HTML(bluemonday.UGCPolicy().SanitizeBytes(readme_rendered_unsafe.Bytes()))
			data["readme"] = readme_rendered_safe
		}
	}

	display_git_tree := make([]display_git_tree_entry_t, 0)
	for _, entry := range tree.Entries {
		display_git_tree_entry := display_git_tree_entry_t{}
		os_mode, err := entry.Mode.ToOSFileMode()
		if err != nil {
			display_git_tree_entry.Mode = "x---"
		} else {
			display_git_tree_entry.Mode = os_mode.String()[:4]
		}
		display_git_tree_entry.Is_file = entry.Mode.IsFile()
		display_git_tree_entry.Size, err = tree.Size(entry.Name)
		if err != nil {
			display_git_tree_entry.Size = 0
		}
		display_git_tree_entry.Name = entry.Name
		display_git_tree = append(display_git_tree, display_git_tree_entry)
	}
	data["files"] = display_git_tree

	err = templates.ExecuteTemplate(w, "repo_index", data)
	if err != nil {
		_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
		return
	}
}

package main

import (
	"bytes"
	"html/template"
	"net/http"
	"path/filepath"
	"strings"

	"github.com/go-git/go-git/v5"
	"github.com/go-git/go-git/v5/plumbing/object"
	"github.com/microcosm-cc/bluemonday"
	"github.com/yuin/goldmark"
)

func handle_repo_tree(w http.ResponseWriter, r *http.Request) {
	data := make(map[string]any)
	// TODO: Sanitize path values

	project_name, repo_name, path_spec := r.PathValue("project_name"), r.PathValue("repo_name"), strings.TrimSuffix(r.PathValue("rest"), "/")
	data["project_name"], data["repo_name"], data["path_spec"] = project_name, repo_name, path_spec
	repo, err := git.PlainOpen(filepath.Join(config.Git.Root, project_name, repo_name+".git"))

	category_name, repo_name, path_spec := r.PathValue("category_name"), r.PathValue("repo_name"), strings.TrimSuffix(r.PathValue("rest"), "/")
	data["category_name"], data["repo_name"], data["path_spec"] = category_name, repo_name, path_spec
	repo, err := git.PlainOpen(filepath.Join(config.Git.Root, category_name, repo_name+".git"))

	if err != nil {
		_, _ = w.Write([]byte("Error opening repo: " + err.Error()))
		return
	}
	head, err := repo.Head()
	if err != nil {
		_, _ = w.Write([]byte("Error getting repo HEAD: " + err.Error()))
		return
	}
	head_hash := head.Hash()
	commit_iter, err := repo.Log(&git.LogOptions{From: head_hash})
	if err != nil {
		_, _ = w.Write([]byte("Error getting repo commits: " + err.Error()))
		return
	}
	recent_commits := make([]*object.Commit, 0)
	defer commit_iter.Close()
	for range 3 {
		this_recent_commit, err := commit_iter.Next()
		if err != nil {
			_, _ = w.Write([]byte("Error getting a recent commit: " + err.Error()))
			return
		}
		recent_commits = append(recent_commits, this_recent_commit)
	}
	data["commits"] = recent_commits
	commit_object, err := repo.CommitObject(head_hash)
	if err != nil {
		_, _ = w.Write([]byte("Error getting commit object: " + err.Error()))
		return
	}
	tree, err := commit_object.Tree()
	if err != nil {
		_, _ = w.Write([]byte("Error getting file tree: " + err.Error()))
		return
	}

	target, err := tree.Tree(path_spec)
	if err != nil {
		file, err := tree.File(path_spec)
		if err != nil {
			_, _ = w.Write([]byte("Error retrieving path: " + err.Error()))
			return
		}
		data["file_contents"], err = file.Contents()
		if err != nil {
			_, _ = w.Write([]byte("Error reading file: " + err.Error()))
			return
		}
		err = templates.ExecuteTemplate(w, "repo_tree_file", data)
		if err != nil {
			_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
			return
		}
		return
	}

	readme_file, err := target.File("README.md")
	if err != nil {
		data["readme"] = "There is no README for this directory."
	} else {
		readme_file_contents, err := readme_file.Contents()
		if err != nil {
			data["readme"] = "There is no README for this directory."
		} else {
			var readme_rendered_unsafe bytes.Buffer
			err = goldmark.Convert([]byte(readme_file_contents), &readme_rendered_unsafe)
			if err != nil {
				readme_rendered_unsafe.WriteString("Unable to render README: " + err.Error())
			}
			readme_rendered_safe := template.HTML(bluemonday.UGCPolicy().SanitizeBytes(readme_rendered_unsafe.Bytes()))
			data["readme"] = readme_rendered_safe
		}
	}

	display_git_tree := make([]display_git_tree_entry_t, 0)
	for _, entry := range target.Entries {
		display_git_tree_entry := display_git_tree_entry_t{}
		os_mode, err := entry.Mode.ToOSFileMode()
		if err != nil {
			display_git_tree_entry.Mode = "----"
		} else {
			display_git_tree_entry.Mode = os_mode.String()[:4]
		}
		display_git_tree_entry.Is_file = entry.Mode.IsFile()
		display_git_tree_entry.Size, err = target.Size(entry.Name)
		if err != nil {
			display_git_tree_entry.Size = 0
		}
		display_git_tree_entry.Name = entry.Name
		display_git_tree = append(display_git_tree, display_git_tree_entry)
	}
	data["files"] = display_git_tree

	err = templates.ExecuteTemplate(w, "repo_tree_dir", data)
	if err != nil {
		_, _ = w.Write([]byte("Error rendering template: " + err.Error()))
		return
	}
}

package main

import (
	"flag"
	"net"
	"net/http"

	"go.lindenii.runxiyu.org/lindenii-common/clog"
)

func main() {
	config_path := flag.String(
		"config",
		"/etc/lindenii/forge.scfg",
		"path to configuration file",
	)
	flag.Parse()

	err := load_config(*config_path)
	if err != nil {
		clog.Fatal(1, "Loading configuration: "+err.Error())
	}

	err = load_templates()
	if err != nil {
		clog.Fatal(1, "Loading templates: "+err.Error())
	}

	err = serve_static()
	if err != nil {
		clog.Fatal(1, "Serving static: "+err.Error())
	}

	http.HandleFunc("/{$}", handle_index)

	http.HandleFunc("/{project_name}/{$}", handle_category_index)
	http.HandleFunc("/{project_name}/repos/{repo_name}/{$}", handle_repo_index)
	http.HandleFunc("/{project_name}/repos/{repo_name}/tree/{ref}/{rest...}", handle_repo_tree)

	http.HandleFunc("/{category_name}/{$}", handle_category_index)
	http.HandleFunc("/{category_name}/repos/{repo_name}/{$}", handle_repo_index)
	http.HandleFunc("/{category_name}/repos/{repo_name}/tree/{ref}/{rest...}", handle_repo_tree)

	listener, err := net.Listen(config.HTTP.Net, config.HTTP.Addr)
	if err != nil {
		clog.Fatal(1, "Listening: "+err.Error())
	}

	err = http.Serve(listener, nil)
	if err != nil {
		clog.Fatal(1, "Serving: "+err.Error())
	}
}

{{- define "repo_index" -}}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="/static/style.css" />

<title>{{ .project_name }}/repos/{{ .repo_name }}</title>

<title>{{ .category_name }}/repos/{{ .repo_name }}</title>

</head>
<body class="repo-index">
<div class="padding-wrapper">
<table id="recent-commits">
<thead>
<tr>
<th scope="col">ID</th>
<th scope="col">Title</th>
<th scope="col">Author</th>
<th scope="col">Time</th>
</tr>
</thead>
<tbody>
{{- range .commits }}
<tr>
<td class="commit-id">{{ slice .Hash.String 0 8 }}</td>
<td class="commit-title">{{ .Message | first_line }}</td>
<td class="commit-author">
<a class="email-name" href="mailto:{{ .Author.Email }}">{{ .Author.Name }}</a>
</td>
<td class="commit-time">
{{ .Author.When.Format "2006-01-02 15:04:05 -0700" }}
</td>
</tr>
{{- end }}
</tbody>
</table>
</div>
<div class="padding-wrapper">
<table id="file-tree">
<thead>
<tr>
<th scope="col">Mode</th>
<th scope="col">Name</th>
<th scope="col">Size</th>
</tr>
</thead>
<tbody>
{{- $ref := .ref }}
{{- range .files }}
<tr>
<td class="file-mode">{{ .Mode }}</td>
<td class="file-name"><a href="tree/{{ $ref }}/{{ .Name }}">{{ .Name }}</a>{{ if not .Is_file }}/{{ end }}</td>
<td class="file-size">{{ .Size }}</td>
</tr>
{{- end }}
</tbody>
</table>
</div>
<div class="padding-wrapper">
<div id="refs">
</div>
</div>
<div class="padding-wrapper">
<div id="readme">
{{ .readme -}}
</div>
</div>
</body>
</html>
{{- end -}}

{{- define "repo_tree_dir" -}}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="/static/style.css" />

<title>{{ .project_name }}/repos/{{ .repo_name }}/{{ .path_spec }}</title>

<title>{{ .category_name }}/repos/{{ .repo_name }}/{{ .path_spec }}</title>

</head>
<body class="repo-tree-dir">
<div class="padding-wrapper">
<p>
/{{ .path_spec }}/
</p>
<table id="file-tree">
<thead>
<tr>
<th scope="col">Mode</th>
<th scope="col">Name</th>
<th scope="col">Size</th>
</tr>
</thead>
<tbody>
{{- $ref := .ref }}
{{- $path_spec := .path_spec }}
{{- range .files }}
<tr>
<td class="file-mode">{{ .Mode }}</td>
<td class="file-name"><a href="{{ $path_spec }}/{{ .Name }}">{{ .Name }}</a>{{ if not .Is_file }}/{{ end }}</td>
<td class="file-size">{{ .Size }}</td>
</tr>
{{- end }}
</tbody>
</table>
</div>
<div class="padding-wrapper">
<div id="refs">
</div>
</div>
<div class="padding-wrapper">
<div id="readme">
{{ .readme -}}
</div>
</div>
</body>
</html>
{{- end -}}

{{- define "repo_tree_file" -}}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="/static/style.css" />

<title>{{ .project_name }}/repos/{{ .repo_name }}/{{ .path_spec }}</title>

<title>{{ .category_name }}/repos/{{ .repo_name }}/{{ .path_spec }}</title>

</head>
<body class="repo-tree-file">
<p>
/{{ .path_spec }}
</p>
<pre>{{ .file_contents }}</pre>
</body>
</html>
{{- end -}}