# =============================================================================
# 1. 环境配置 & 路径兼容
# =============================================================================
if functions -q fish_add_path
    fish_add_path ~/.flinty/bin
else
    # 针对 Fish < 3.2.0 的版本
    if not contains "$HOME/.flinty/bin" $PATH
        set -gx PATH "$HOME/.flinty/bin" $PATH
    end
end

set -gx LANG C.UTF-8
set -gx LC_ALL C.UTF-8
set -gx EDITOR nano

# 禁用 Fish 默认欢迎语
set -g fish_greeting ""

function fish_greeting
    echo ""
    # 顶部欢迎与 补正后的时区时间
    set_color -o cyan
    echo "Welcome back, $USER"
    # 在 TZ 环境变量中，GMT-8 指向东八区 (北京时间)
    set -l current_time (env TZ="GMT-8" date "+%Y-%m-%d %H:%M:%S")
    echo "Time (Asia/Shanghai): $current_time"
    set_color normal
    echo ""

    # 包管理器逻辑 (优先检查 oma)
    set -l pm_name ""
    if type -q oma
        set pm_name (set_color -o green)"oma"(set_color normal)
    else
        # 回退到系统默认包管理器
        if type -q brew; set pm_name "Homebrew"
        else if type -q apt; set pm_name "apt"
        else if type -q pacman; set pm_name "pacman"
        else if type -q dnf; set pm_name "dnf"
        else; set pm_name "Default PM"
        end
    end

    echo "Package Manager: $pm_name"
    echo ""
end

# =============================================================================
# 2. 核心增强函数 (ls / eza 包装器)
# =============================================================================
function ls --description 'alias ls to eza with directory `.tldr` descriptions'
    # 1. 核心路由：确定可用的 eza 二进制文件路径（继承你的多架构判定）
    set -l eza_bin ""
    if type -q eza
        set eza_bin "eza"
    else
        set -l arch (uname -m)
        set -l target_bin ""
        switch $arch
            case x86_64
                if test -f /etc/alpine-release
                    set target_bin "eza_x86_64-unknown-linux-musl"
                else
                    set target_bin "eza_x86_64-unknown-linux-gnu"
                end
            case aarch64 arm64
                set target_bin "eza_aarch64-unknown-linux-gnu"
        end
        
        set -l custom_eza "$HOME/.flinty/bin/$target_bin"
        if test -n "$target_bin"; and test -x "$custom_eza"
            set eza_bin "$custom_eza"
        end
    end

    # 2. 兜底策略：如果最终没有找到任何 eza，完全回退到原生 command ls
    if test -z "$eza_bin"
        command ls -la $argv
        return
    end

    # 3. 动态描述注入核心引擎
    # 建立展示行：带颜色、带图标、全长格式 (-la 是你预期的默认行为)
    set -l lines ($eza_bin -la --icons --color=always $argv)

    # 建立纯净路径行：过滤掉所有格式化干扰项，确保只拿到绝对路径
    # 必须保留你的自定义排序/过滤参数（如 --sort），但剔除 -l 和 --icons
    set -l clean_args
    for arg in $argv
        switch $arg
            case '-l' '--long' '--icons'
                # 忽略影响长格式和图标的参数
            case '-la' '-al' '-lA' '-Al'
                # 如果是组合参数，剥离掉 'l'，保留 'a' 或 'A' 保证文件对齐
                set -l stripped (string replace -a 'l' '' $arg)
                if test "$stripped" != "-"
                    set -a clean_args $stripped
                end
            case '*'
                set -a clean_args $arg
        end
    end

    # 核心修正：只用 -a（显示隐藏）和 -1（单列），配合 --absolute=on 拿到纯路径
    set -l paths ($eza_bin -a -1 --absolute=on --color=never $clean_args 2>/dev/null)

    # 安全网：如果由于特殊参数导致行数不匹配，安全回退到原装输出防止错位
    if test (count $lines) -ne (count $paths)
        $eza_bin -la --icons $argv
        return
    end

    # 双路循环渲染
    for i in (seq (count $lines))
        set -l line $lines[$i]
        set -l target_path $paths[$i]

        # 此时 $target_path 是完美的纯绝对路径，test 能够精准命中
        if test -d "$target_path"; and test -f "$target_path/.tldr"
            set -l desc (head -n 1 "$target_path/.tldr" | string trim)
            if test -n "$desc"
                # 在行尾追加青色 (Cyan) 的备忘后缀
                echo -e "$line \e[36m<- $desc\e[0m"
                continue
            end
        end
        echo -e "$line"
    end
end

## 按修改时间排序列出文件 (由于 ls 已增强，此命令自动继承备忘显示)
function lt --description 'ls sorted by time'
    ls --sort=modified $argv
end

# =============================================================================
# 3. 运维与效率工具函数
# =============================================================================

## 快捷为目录添加或查看备忘贴纸
function tldr --description 'Add or view description note for a directory'
    if test (count $argv) -eq 0
        echo "Usage: tldr \"你的项目描述\" [目录路径]"
        echo "   Or: tldr -d [目录路径] (删除备忘)"
        return 1
    end

    if test "$argv[1]" = "-d"
        set -l target_dir "."
        if test (count $argv) -gt 1; set target_dir $argv[2]; end
        if test -f "$target_dir/.tldr"
            rm "$target_dir/.tldr"
            echo "已移除 '$target_dir' 的备忘贴纸。"
        end
        return 0
    end

    set -l desc $argv[1]
    set -l target_dir "."
    if test (count $argv) -gt 1; set target_dir $argv[2]; end

    if not test -d "$target_dir"
        echo (set_color -o red)"Error: $target_dir 不是一个有效的目录"(set_color normal)
        return 1
    end

    echo "$desc" > "$target_dir/.tldr"
    echo "成功贴上标签 ➜ 有效目录: '$target_dir' [ $desc ]"
end

## 更新配置
function dotu
    set -l current_dir (pwd)
    cd $HOME/.flinty
    if git pull
        source ~/.config/fish/config.fish
        echo "Config reloaded successfully!"
    end
    cd $current_dir
end

## 修复某些命令行工具导致的光标消失
function restore_cursor --on-event fish_postexec
    tput cnorm
end

## 自动递增探测可用端口
function portcheck
    set -l port 8840
    if test (count $argv) -gt 0; set port $argv[1]; end

    while ss -tuln | grep -q ":$port "
        set port (math $port + 1)
    end
    echo $port
end

## Yazi 联动：退出时自动切换到最后所在的目录
function y
    set -l tmp (mktemp -t "yazi-cwd.XXXXXX")
    yazi $argv --cwd-file="$tmp"
    if set cwd (cat -- "$tmp"); and [ -n "$cwd" ]; and [ "$cwd" != "$PWD" ]
        builtin cd -- "$cwd"
    end
    rm -f -- "$tmp"
end

# =============================================================================
# 4. 别名与缩写 (Abbr / Alias)
# =============================================================================
abbr -a cc 'claude --permission-mode bypassPermissions'
abbr -a port 'sudo ss -tulnp | grep'
abbr -a process 'sudo ps aux | grep'
abbr -a service 'sudo systemctl list-units --type=service --all | grep'

alias fastfetch="fastfetch --color-keys blue"

## 会话级代理控制
function proxy --description 'Set HTTP proxy for current session'
    echo -n "HTTP proxy address (e.g. http://192.168.5.14:6152): "
    read proxy_addr

    if test -n "$proxy_addr"
        set -gx HTTP_PROXY "$proxy_addr"
        set -gx HTTPS_PROXY "$proxy_addr"
        echo "Proxy set: $proxy_addr"
    else
        echo "Proxy cleared"
        set -e HTTP_PROXY
        set -e HTTPS_PROXY
    end
end