local HIGHLIGHTS = {
    GitDeleted = "Removed",
    GitIgnored = "Comment",
    GitUnstaged = "Changed",
    GitRenamed = "GitStaged",
    GitSha = "Identifier",
    GitStaged = "Constant",
    GitUnmerged = "Todo",
    GitUnpulled = "Removed",
    GitUnpushed = "Added",
    GitUntracked = "Added",
}

local M = {}

function M.status()
    return vim.b.git_status or ""
end

function M.init()
    for name, link in pairs(HIGHLIGHTS) do
        vim.api.nvim_set_hl(0, name, { link = link, default = true })
    end

    local group = vim.api.nvim_create_augroup("ow.git", { clear = true })

    vim.api.nvim_create_autocmd(
        { "BufReadPost", "BufNewFile", "BufWritePost", "FileChangedShellPost" },
        {
            group = group,
            callback = function(args)
                require("git.repo").refresh_buf(args.buf)
            end,
        }
    )
    vim.api.nvim_create_autocmd({ "BufDelete", "BufWipeout" }, {
        group = group,
        callback = function(args)
            require("git.repo").unregister(args.buf)
        end,
    })
    vim.api.nvim_create_autocmd("FocusGained", {
        group = group,
        callback = function()
            require("git.repo").refresh_buf(vim.api.nvim_get_current_buf())
        end,
    })
    vim.api.nvim_create_autocmd("VimLeavePre", {
        group = group,
        callback = function()
            require("git.repo").stop_all()
        end,
    })

    vim.api.nvim_create_autocmd("BufReadCmd", {
        pattern = "git://*",
        group = group,
        callback = function(args)
            require("git.object").read_uri(args.buf)
        end,
    })

    vim.api.nvim_create_autocmd("BufReadCmd", {
        pattern = "gitlog://*",
        group = group,
        callback = function(args)
            require("git.log").read_uri(args.buf)
        end,
    })
    vim.api.nvim_create_user_command("Glog", function(opts)
        require("git.log").run_glog(opts)
    end, {
        nargs = "*",
        complete = function(...)
            return require("git.log").complete_glog(...)
        end,
        desc = "Show git log",
    })

    local function diff_split_cmd(vertical)
        return function(opts)
            require("git.diff").split({
                rev = opts.args ~= "" and opts.args or nil,
                vertical = vertical,
            })
        end
    end
    vim.api.nvim_create_user_command(
        "Gdiffsplit",
        diff_split_cmd(true),
        { nargs = "?", desc = "Diff against <rev>" }
    )
    vim.api.nvim_create_user_command(
        "Gvdiffsplit",
        diff_split_cmd(true),
        { nargs = "?", desc = "Diff against <rev> (vertical split)" }
    )
    vim.api.nvim_create_user_command(
        "Ghdiffsplit",
        diff_split_cmd(false),
        { nargs = "?", desc = "Diff against <rev> (horizontal split)" }
    )

    vim.api.nvim_create_user_command("G", function(opts)
        require("git.cmd").run(opts.fargs)
    end, {
        nargs = "*",
        complete = function(...)
            return require("git.cmd").complete(...)
        end,
    })
end

return M