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local Job = require("plenary.job")
local Path = require("plenary.path")
local utils = require("inbox.utils")
---@class inbox.Indexer.Notmuch.Config
local default_config = {
database_dir = Path:new(vim.env.XDG_DATA_HOME, "mail").filename,
map_tag_signs = {},
}
---@class inbox.Indexer.Notmuch: inbox.Indexer, inbox.Indexer.Notmuch.Config
---@field _cache table<string, inbox.Notmuch.Entry>
---@field cache? fun(id: string): inbox.Notmuch.Entry?
---@field flatten_parts? fun(part: inbox.EntryPart, parts: inbox.EntryPart[]?): inbox.EntryPart[]
---@field show_id? fun(id: string): inbox.Notmuch.Entry
---@field parse_tags? fun(tags: string[]): string[]
---@field summarize? fun(item: inbox.Notmuch.SearchResult): inbox.Summary
---@class inbox.Notmuch.SearchResult
---@field authors string | string[]
---@field date_relative string
---@field matched integer
---@field query string[]
---@field subject string | string[]
---@field tags string[]
---@field thread integer
---@field timestamp integer
---@field total integer
---@class inbox.Notmuch.Entry: inbox.Entry
---@field filename string[]
---@field date_relative string?
---@field duplicate integer
---@field body inbox.EntryPart[]
---@field crypto table
---@type inbox.Indexer.Notmuch
local M = {
_cache = {},
}
---@private
---@param id string
---@return inbox.Notmuch.Entry | nil
function M.cache(id)
if M._cache[id] == nil then
M._cache[id] = M.show_id(id)
end
return M._cache[id]
end
function M.available()
return vim.fn.executable("notmuch") == 1
end
function M.index(maildir, callback, opts)
opts = opts or {}
local job = Job:new({
command = "notmuch",
args = { "search", "--format=json" },
on_exit = vim.schedule_wrap(function(j)
---@type inbox.Notmuch.SearchResult[]
local results = utils.json_decode(table.concat(j:result(), "\n"))
---@type inbox.Summary[]
local entries = {}
local ids = {}
local signs = {}
for lnum, result in ipairs(results) do
ids[lnum] = (result.query[1]:gsub("^id:", ""))
entries[lnum] = M.summarize(result)
for _, sign in pairs(M.parse_tags(result.tags)) do
table.insert(signs, { sign, lnum })
end
end
callback(ids, entries, signs)
end),
})
local folder = Path:new(maildir):make_relative(M.database_dir)
table.insert(job.args, ("folder:%s"):format(folder))
-- TODO: handle different operators i.e. "not", "or", etc.
for name, value in pairs(opts) do
table.insert(job.args, "and")
table.insert(job.args, ("%s:%s"):format(name, value))
end
job:start()
end
---@private
---@param tags string[]
---@return string[] parsed tags
function M.parse_tags(tags)
local signs = {}
for _, tag in ipairs(tags) do
if M.map_tag_signs[tag] ~= nil then
table.insert(signs, M.map_tag_signs[tag])
else
table.insert(signs, tag)
end
end
return signs
end
---@private
---@param item inbox.Notmuch.SearchResult
---@return inbox.Summary summary
function M.summarize(item)
local date = item.date_relative
local from
if type(item.authors) == "table" then
from = item.authors[1] --[[@as string]]
else
from = item.authors --[[@as string]]
end
local subject
if type(item.subject) == "table" then
subject = item.subject[1] --[[@as string]]
else
subject = item.subject --[[@as string]]
end
subject = subject:gsub("\r?\n", " ")
return {
date,
from,
subject,
}
end
---@private
---@param id string
---@return inbox.Notmuch.Entry?
function M.show_id(id)
if id == nil then
vim.notify(("Failed to find entry with id: '%s'"):format(id), vim.log.levels.ERROR)
return nil
end
local job = Job:new({
command = "notmuch",
args = { "show", "--format=json", "--include-html", ("id:%s"):format(id) },
})
local stdout = job:sync()
local entry = utils.json_decode(table.concat(stdout, "\n"))
while not vim.tbl_isempty(entry) and vim.tbl_islist(entry) do
entry = entry[1] --[[@as inbox.Notmuch.Entry]]
end
entry.tags = M.parse_tags(entry.tags)
entry.parts = {}
for _, part in pairs(M.flatten_parts(entry.body[1])) do
entry.parts[part["content-type"]] = part
end
return entry
end
function M.get_entry(id)
return M.cache(id)
end
function M.flatten_parts(part, parts)
if parts == nil then
parts = {}
end
if type(part.content) == "table" then
for _, p in
pairs(part.content --[[@as inbox.EntryPart[] ]])
do
parts = M.flatten_parts(p, parts)
end
else
table.insert(parts, part)
end
return parts
end
---@param opts inbox.Indexer.Notmuch.Config
function M.setup(opts)
local config = vim.tbl_deep_extend("keep", opts or {}, default_config)
for k, v in pairs(config) do
M[k] = v
end
end
return M
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