local t = require('tests.harness')
local spec = require('arti-pack.spec')

local REGISTRY = 'https://artifacts.example.com/artifactory/github-remote'

t.describe('spec.parse', function()
  t.it('parses a full table spec', function()
    local s = assert(spec.parse({ 'nvim-lua/plenary.nvim', tag = 'v0.1.4', opt = true }))
    t.eq('nvim-lua', s.owner)
    t.eq('plenary.nvim', s.repo)
    t.eq('plenary.nvim', s.name)
    t.eq('v0.1.4', s.tag)
    t.eq('zip', s.ext)
    t.eq(true, s.opt)
  end)

  t.it('defaults opt to false', function()
    local s = assert(spec.parse({ 'tpope/vim-fugitive', tag = 'v3.7' }))
    t.eq(false, s.opt)
  end)

  t.it('honours an "as" override for the install directory', function()
    local s = assert(spec.parse({ 'folke/tokyonight.nvim', tag = 'v4.10.0', as = 'tokyonight' }))
    t.eq('tokyonight', s.name)
  end)

  t.it('accepts a source key instead of the positional entry', function()
    local s = assert(spec.parse({ source = 'owner/repo', tag = 'v1' }))
    t.eq('owner/repo', s.source)
  end)

  t.it('rejects a bare string with no tag', function()
    local s, err = spec.parse('owner/repo')
    t.falsy(s)
    t.matches('missing a tag', err)
  end)

  t.it('rejects a source without an owner', function()
    local s, err = spec.parse({ 'plenary.nvim', tag = 'v1' })
    t.falsy(s)
    t.matches('expected "owner/repo"', err)
  end)

  t.it('rejects a source with extra path segments', function()
    local s, err = spec.parse({ 'a/b/c', tag = 'v1' })
    t.falsy(s)
    t.matches('expected "owner/repo"', err)
  end)

  t.it('rejects a tag containing a path separator', function()
    local s, err = spec.parse({ 'owner/repo', tag = '../../etc' })
    t.falsy(s)
    t.matches('invalid tag', err)
  end)

  t.it('rejects an unsupported extension', function()
    local s, err = spec.parse({ 'owner/repo', tag = 'v1', ext = 'rar' })
    t.falsy(s)
    t.matches('unsupported ext', err)
  end)

  t.it('rejects a traversing "as" name', function()
    local s, err = spec.parse({ 'owner/repo', tag = 'v1', as = '..' })
    t.falsy(s)
    t.matches('unusable directory name', err)
  end)

  t.it('rejects a non-table, non-string spec', function()
    local s, err = spec.parse(42)
    t.falsy(s)
    t.matches('must be a string or a table', err)
  end)

  t.it('trims surrounding whitespace from the source and tag', function()
    local s = assert(spec.parse({ '  owner/repo  ', tag = ' v1.0.0 ' }))
    t.eq('owner/repo', s.source)
    t.eq('v1.0.0', s.tag)
  end)
end)

t.describe('spec.url', function()
  t.it('builds a tag archive url', function()
    local s = assert(spec.parse({ 'nvim-lua/plenary.nvim', tag = 'v0.1.4' }))
    t.eq(REGISTRY .. '/nvim-lua/plenary.nvim/archive/refs/tags/v0.1.4.zip', spec.url(s, REGISTRY))
  end)

  t.it('honours the tar.gz extension', function()
    local s = assert(spec.parse({ 'nvim-lua/plenary.nvim', tag = 'v0.1.4', ext = 'tar.gz' }))
    t.matches('/v0%.1%.4%.tar%.gz$', spec.url(s, REGISTRY))
  end)

  t.it('does not double up on a trailing registry slash', function()
    local s = assert(spec.parse({ 'owner/repo', tag = 'v1' }))
    t.eq(REGISTRY .. '/owner/repo/archive/refs/tags/v1.zip', spec.url(s, REGISTRY .. '///'))
  end)

  t.it('passes an explicit url straight through', function()
    local s = assert(spec.parse({ 'owner/repo', tag = 'v1', url = 'https://example.test/a.zip' }))
    t.eq('https://example.test/a.zip', spec.url(s, REGISTRY))
  end)

  t.it('errors when no registry is configured', function()
    local s = assert(spec.parse({ 'owner/repo', tag = 'v1' }))
    local url, err = spec.url(s, '')
    t.falsy(url)
    t.matches('registry', err)
  end)
end)

t.describe('spec.parse_all', function()
  t.it('collects specs and reports per-entry errors', function()
    local specs, errors = spec.parse_all({
      { 'a/one', tag = 'v1' },
      { 'bad-source', tag = 'v1' },
      { 'b/two', tag = 'v2', opt = true },
    })
    t.eq(2, #specs)
    t.eq(1, #errors)
    t.matches('plugins%[2%]', errors[1])
  end)

  t.it('rejects two specs that install to the same directory', function()
    local specs, errors = spec.parse_all({
      { 'a/shared', tag = 'v1' },
      { 'b/shared', tag = 'v2' },
    })
    t.eq(1, #specs)
    t.matches('duplicate plugin name', errors[1])
  end)

  t.it('returns empty results for a nil plugin list', function()
    local specs, errors = spec.parse_all(nil)
    t.eq({}, specs)
    t.eq({}, errors)
  end)
end)