local util = require "rc.util"
local obsidian = require "rc.obsidian"
-- vim:fdm=marker:fmr=§§,■■

-- §§1 highlight
util.create_cmd("HighlightGroup", function()
    print(vim.fn.synIDattr(vim.fn.synIDtrans(vim.fn.synID(vim.fn.line ".", vim.fn.col ".", 1)), "name"))
end)
util.create_cmd("HighlightItem", function()
    print(vim.fn.synIDattr(vim.fn.synID(vim.fn.line ".", vim.fn.col ".", 1), "name"))
end)

-- §§1 encoding
util.create_cmd("Utf8", "edit ++enc=utf-8 %")
util.create_cmd("Cp932", "edit ++enc=cp932 %")
util.create_cmd("Unix", "edit ++enc=unix %")
util.create_cmd("Dos", "edit ++enc=dos %")
util.create_cmd("AsUtf8", "set fenc=utf-8|w")

-- §§1 diff
util.create_cmd("DiffThese", function()
    if vim.fn.winnr "$" == 2 then
        vim.cmd [[
            diffthis
            wincmd w
            diffthis
            wincmd w
        ]]
    else
        vim.cmd [[echomsg "Too many windows."]]
    end
end)

-- §§1 rename/delete file
-- thanks to cohama
util.create_cmd("DeleteMe", function(meta)
    local force = meta.bang
    if force or not vim.bo.modified then
        local filename = vim.fn.expand("%", nil, nil)
        vim.cmd [[bdelete!]]
        vim.fn.delete(filename)
    else
        vim.cmd [[echomsg 'File modified']]
    end
end, { bang = true })

util.create_cmd("RenameMe", function(meta)
    local new_fname = meta.args
    local current_fname = vim.fn.expand("%", nil, nil)
    vim.cmd("saveas " .. new_fname)
    vim.cmd [[bdelete! #]]
    vim.fn.delete(current_fname)
end, { nargs = 1 })
vim.cmd [[
    cnoreabbrev <expr> RenameMe "RenameMe " . expand('%')
]]

-- §§1 行末の空白とか最終行の空行を削除
util.create_cmd("RemoveUnwantedSpaces", function(meta)
    local pos_save = vim.fn.getpos "."
    vim.cmd([[keeppatterns ]] .. meta.line1 .. "," .. meta.line2 .. [[s/\s\+$//e]])
    while true do
        if vim.regex([[^\s*$]]):match_str(vim.fn.getline "$") and vim.fn.line "$" ~= 1 then
            vim.cmd [[silent $delete]]
        else
            break
        end
    end
    vim.fn.setpos(".", pos_save)
end, { range = "%" })

util.create_cmd("YankCurrentFileName", [[let @+ = expand("%:p")]])

util.create_cmd("SubstituteCommaPeriod", function(meta)
    local invert = meta.bang
    if invert then
        vim.cmd [[
        keeppatterns %substitute/、/，/g
        keeppatterns %substitute/。/．/g
        ]]
    else
        vim.cmd [[
        keeppatterns %substitute/，/、/g
        keeppatterns %substitute/．/。/g
        ]]
    end
end, { bang = true })

-- §§1 memolist.vim + telescope
util.create_cmd("MemoFind", function()
    require("telescope.builtin").find_files { cwd = "~/memo" }
end)

util.create_cmd("MemoFind", function()
    require("telescope.builtin").live_grep { cwd = "~/memo" }
end)

util.create_cmd("Normal", function(tbl)
    local code = vim.api.nvim_replace_termcodes(tbl.args, true, true, true)
    local cmd = util.ifexpr(tbl.bang, "normal!", "normal")
    for i = tbl.line1, tbl.line2, 1 do
        vim.cmd(i .. cmd .. " " .. code)
    end
end, { range = true, nargs = 1, bang = true })

-- §§1 obsidian
util.create_cmd("ObsidianList", obsidian.open_fern)
util.create_cmd("ObsidianOpenDiary", function(meta)
    obsidian.open_diary(meta.args)
end, { nargs = "*", complete = obsidian.open_diary_complete })
util.create_cmd("ObsidianGrep", function()
    vim.ui.input({ prompt = "g/" }, function(kwd)
        obsidian.grep_keyword(kwd)
    end)
end)